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Number

497

  • Positive
  • Odd
  • Composite
  • 3 digits

497 is an odd 3-digit integer and a composite number. It has 4 divisors and a digital root of 2.

Number properties

ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value497
Digit count3
Digit sum20
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation7 × 71
Distinct prime factors27, 71
Number of divisors4
Sum of divisors σ(n)576
Aliquot sum79sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)420integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 7, 71, 4974 in total

Arithmetic

Previous number496
Next number498
Double994
Half248.5
Square247,009
Cube122,763,473
Square root22.29349681≈irrational, shown to 9 decimal places
Cube root7.921099395≈
Negation-497
Reciprocal0.0020120724≈
497 factorial9819935662418089743352075922310862095706… (1,126 digits)

Representations

Decimal497
Binary1111100019 bits
Octal761
Hexadecimal1F1
Base 36DT
Roman numeralCDXCVII
In wordsfour hundred and ninety-seven
Ordinalfour hundred and ninety-seventh
Scientific notation4.97 × 10^2
Engineering notation497

Nearest landmarks

Next prime499+2
Previous prime491−6
Distance to nearest prime2
Nearest square below484
Nearest square above529

Powers & multiples

497 to the power 2247,009
497 to the power 3122,763,473
497 to the power 461,013,446,081
497 to the power 530,323,682,702,257
First ten multiples497, 994, 1,491, 1,988, 2,485, 2,982, 3,479, 3,976, 4,473, 4,970
Powers of twoBetween 2^8 (256) and 2^9 (512)

Divisibility tests

Divisible by 2No, remainder 1
Divisible by 3No, remainder 2
Divisible by 4No, remainder 1
Divisible by 5No, remainder 2
Divisible by 6No, remainder 5
Divisible by 7Yes
Divisible by 8No, remainder 1
Divisible by 9No, remainder 2
Divisible by 10No, remainder 7
Divisible by 11No, remainder 2
Divisible by 12No, remainder 5
Divisible by 100No, remainder 97

Collatz (3n + 1) trajectory

Steps to reach 122the total stopping time
Highest value reached1,4923× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps497 → 1,492 → 746 → 373 → 1,120 → 560 → 280 → 140 → 70 → 35 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage49,700%
497% as a decimal4.97
497% of 100497
497% of 1,0004,970
As a fraction of 100497/100

Read another way

As seconds8 minutes and 17 seconds
As bytes497 B
As a 24-bit colour#0001F1

Keep nerding

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Neighbouring numbers

Nearby primes

Also reads as

#449977 (colour)

  • #449977
  • Cyan
  • Dark
  • Nearest: Sea green

#449977 is a cyan with RGB values 68, 153, 119 and HSL 156°, 38%, 43%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Sea green.

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Colour values

#449977#449977
HEX#449977
HEX (short)#497
RGBrgb(68, 153, 119)
RGB (0–1)0.2667, 0.6, 0.4667
RGB percentages26.7%, 60%, 46.7%
HSLhsl(156, 38.5%, 43.3%)
HSV / HSBhsv(156, 55.6%, 60%)
CMYK55.6%, 0%, 22.2%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,495,735
CSS custom property--colour: #449977;

Brightness & contrast

Relative luminance0.25343WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.07:1
Contrast with white3.46:1WCAG normal text: Fail
Contrast with black6.07:1WCAG normal text: AA
Greyscale equivalent#848484
Inverted#BB6688

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#968F75no red cones; affects about 1% of men; ΔE 32.6 from the original
Deuteranopia#8A8679no green cones; the most common form, about 1% of men; ΔE 33.4 from the original
Tritanopia#21998Fno blue cones; rare, and affects men and women equally; ΔE 14.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.46:1WCAG large text: AA
Contrast with black, large text6.07:1WCAG large text: AAA

Named colours

Sea green · ΔE 12.8Light seagreen · ΔE 18.8Medium aquamarine · ΔE 18.9Dark seagreen · ΔE 19.6Dark cyan · ΔE 20.2Medium seagreen · ΔE 21.4
Nearest named CSS colourSea green (#2E8B57)ΔE 12.75, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#994466
Analogous#44994D, #449199
Triadic#774499, #997744
Split complementary#994491, #994D44
Tetradic#4C4499, #994466, #919944

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4E5D8
Lighter +30%#A1D5C0
Lighter +20%#7EC5A9
Lighter +10%#5AB691
Darker −10%#34765C
Darker −20%#255240
Darker −30%#152F25
Darker −40%#050C09
More saturated +25%#28B57D
Less saturated −25%#607D71

Channel breakdown

R68
G153
B119
Red68 (26.7%)
Green153 (60%)
Blue119 (46.7%)
Hue156°
Saturation (HSL)38.46%
Lightness43.33%
Dominant channelGreen
Hex per channelR 44 · G 99 · B 77

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Every value on this page was computed from “497” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.