Number
587
- Positive
- Odd
- Prime
- 3 digits
587 is an odd 3-digit integer and a prime number. It has 2 divisors and a digital root of 2.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value587
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 factorisation587
Distinct prime factors1587
Number of divisors2
Sum of divisors σ(n)588
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)586integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 5872 in total
Arithmetic
Representations
Decimal587
Binary100100101110 bits
Octal1113
Hexadecimal24B
Base 36GB
Roman numeralDLXXXVII
In wordsfive hundred and eighty-seven
Ordinalfive hundred and eighty-seventh
Scientific notation5.87 × 10^2
Engineering notation587
Nearest landmarks
Powers & multiples
587 to the power 2344,569
587 to the power 3202,262,003
587 to the power 4118,727,795,761
587 to the power 569,693,216,111,707
First ten multiples587, 1,174, 1,761, 2,348, 2,935, 3,522, 4,109, 4,696, 5,283, 5,870
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 2
Divisible by 4No, remainder 3
Divisible by 5No, remainder 2
Divisible by 6No, remainder 5
Divisible by 7No, remainder 6
Divisible by 8No, remainder 3
Divisible by 9No, remainder 2
Divisible by 10No, remainder 7
Divisible by 11No, remainder 4
Divisible by 12No, remainder 11
Divisible by 100No, remainder 87
Collatz (3n + 1) trajectory
Steps to reach 1118the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps587 → 1,762 → 881 → 2,644 → 1,322 → 661 → 1,984 → 992 → 496 → 248 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage58,700%
587% as a decimal5.87
587% of 100587
587% of 1,0005,870
As a fraction of 100587/100
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Derived from 587
Other readings
Also reads as
#558877 (colour)
- #558877
- Cyan
- Dark
- Nearest: Cadetblue
#558877 is a cyan with RGB values 85, 136, 119 and HSL 160°, 23%, 43%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Cadetblue.
Colour values
#558877#558877
HEX#558877
HEX (short)#587
RGBrgb(85, 136, 119)
RGB (0–1)0.3333, 0.5333, 0.4667
RGB percentages33.3%, 53.3%, 46.7%
HSLhsl(160, 23.1%, 43.3%)
HSV / HSBhsv(160, 37.5%, 53.3%)
CMYK37.5%, 0%, 12.5%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,605,495
CSS custom property--colour: #558877;
Brightness & contrast
Relative luminance0.20872WCAG 2.x, 0 is black and 1 is white
Perceived brightness121 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.17:1
Contrast with white4.06:1WCAG normal text: Fail
Contrast with black5.17:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#AA7788
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.06:1WCAG large text: AA
Contrast with black, large text5.17:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#885566
Analogous#55885E, #558088
Triadic#775588, #887755
Split complementary#885580, #885E55
Tetradic#5E5588, #885566, #808855
Tints, shades & saturation
Channel breakdown
R85
G136
B119
Red85 (33.3%)
Green136 (53.3%)
Blue119 (46.7%)
Hue160°
Saturation (HSL)23.08%
Lightness43.33%
Dominant channelGreen
Hex per channelR 55 · G 88 · B 77
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