Number
177
- Positive
- Odd
- Composite
- 3 digits
177 is an odd 3-digit integer and a composite number. It has 4 divisors and a digital root of 6.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value177
Digit count3
Digit sum15
Digital root6repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation3 × 59
Distinct prime factors23, 59
Number of divisors4
Sum of divisors σ(n)240
Aliquot sum63sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)116integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 3, 59, 1774 in total
Arithmetic
Representations
Decimal177
Binary101100018 bits
Octal261
HexadecimalB1
Base 364X
Roman numeralCLXXVII
In wordsone hundred and seventy-seven
Ordinalone hundred and seventy-seventh
Scientific notation1.77 × 10^2
Engineering notation177
Nearest landmarks
Powers & multiples
177 to the power 231,329
177 to the power 35,545,233
177 to the power 4981,506,241
177 to the power 5173,726,604,657
First ten multiples177, 354, 531, 708, 885, 1,062, 1,239, 1,416, 1,593, 1,770
Powers of twoBetween 2^7 (128) and 2^8 (256)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3Yes
Divisible by 4No, remainder 1
Divisible by 5No, remainder 2
Divisible by 6No, remainder 3
Divisible by 7No, remainder 2
Divisible by 8No, remainder 1
Divisible by 9No, remainder 6
Divisible by 10No, remainder 7
Divisible by 11No, remainder 1
Divisible by 12No, remainder 9
Divisible by 100No, remainder 77
Collatz (3n + 1) trajectory
Steps to reach 131the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps177 → 532 → 266 → 133 → 400 → 200 → 100 → 50 → 25 → 76 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage17,700%
177% as a decimal1.77
177% of 100177
177% of 1,0001,770
As a fraction of 100177/100
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Derived from 177
Other readings
Also reads as
#117777 (colour)
- #117777
- Cyan
- Dark
- Nearest: Teal
#117777 is a cyan with RGB values 17, 119, 119 and HSL 180°, 75%, 27%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Teal.
Colour values
#117777#117777
HEX#117777
HEX (short)#177
RGBrgb(17, 119, 119)
RGB (0–1)0.0667, 0.4667, 0.4667
RGB percentages6.7%, 46.7%, 46.7%
HSLhsl(180, 75%, 26.7%)
HSV / HSBhsv(180, 85.7%, 46.7%)
CMYK85.7%, 0%, 0%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,144,695
CSS custom property--colour: #117777;
Brightness & contrast
Relative luminance0.14645WCAG 2.x, 0 is black and 1 is white
Perceived brightness100.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.34:1
Contrast with white5.34:1WCAG normal text: AA
Contrast with black3.93:1WCAG normal text: Fail
Greyscale equivalent#616161
Inverted#EE8888
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.34:1WCAG large text: AAA
Contrast with black, large text3.93:1WCAG large text: AA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#771111
Analogous#117744, #114477
Triadic#771177, #777711
Split complementary#771144, #774411
Tetradic#441177, #771111, #447711
Tints, shades & saturation
Channel breakdown
R17
G119
B119
Red17 (6.7%)
Green119 (46.7%)
Blue119 (46.7%)
Hue180°
Saturation (HSL)75%
Lightness26.67%
Dominant channelGreen and Blue
Hex per channelR 11 · G 77 · B 77
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