Number
887
- Positive
- Odd
- Prime
- 3 digits
887 is an odd 3-digit integer and a prime number. It has 2 divisors and a digital root of 5.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value887
Digit count3
Digit sum23
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation887
Distinct prime factors1887
Number of divisors2
Sum of divisors σ(n)888
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)886integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 8872 in total
Arithmetic
Representations
Decimal887
Binary110111011110 bits
Octal1567
Hexadecimal377
Base 36ON
Roman numeralDCCCLXXXVII
In wordseight hundred and eighty-seven
Ordinaleight hundred and eighty-seventh
Scientific notation8.87 × 10^2
Engineering notation887
Nearest landmarks
Powers & multiples
887 to the power 2786,769
887 to the power 3697,864,103
887 to the power 4619,005,459,361
887 to the power 5549,057,842,453,207
First ten multiples887, 1,774, 2,661, 3,548, 4,435, 5,322, 6,209, 7,096, 7,983, 8,870
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 5
Divisible by 8No, remainder 7
Divisible by 9No, remainder 5
Divisible by 10No, remainder 7
Divisible by 11No, remainder 7
Divisible by 12No, remainder 11
Divisible by 100No, remainder 87
Collatz (3n + 1) trajectory
Steps to reach 154the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps887 → 2,662 → 1,331 → 3,994 → 1,997 → 5,992 → 2,996 → 1,498 → 749 → 2,248 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage88,700%
887% as a decimal8.87
887% of 100887
887% of 1,0008,870
As a fraction of 100887/100
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Derived from 887
Other readings
Also reads as
#888877 (colour)
- #888877
- Grey
- Dark
- Nearest: Gray
#888877 is a grey with RGB values 136, 136, 119 and HSL 60°, 7%, 50%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Gray.
Colour values
#888877#888877
HEX#888877
HEX (short)#887
RGBrgb(136, 136, 119)
RGB (0–1)0.5333, 0.5333, 0.4667
RGB percentages53.3%, 53.3%, 46.7%
HSLhsl(60, 6.7%, 50%)
HSV / HSBhsv(60, 12.5%, 53.3%)
CMYK0%, 0%, 12.5%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,947,831
CSS custom property--colour: #888877;
Brightness & contrast
Relative luminance0.24174WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.83:1
Contrast with white3.6:1WCAG normal text: Fail
Contrast with black5.83:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#777788
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.6:1WCAG large text: AA
Contrast with black, large text5.83:1WCAG large text: AAA
Named colours
Hue familygrey
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#777788
Analogous#888077, #808877
Triadic#778888, #887788
Split complementary#778088, #807788
Tetradic#778880, #777788, #887780
Tints, shades & saturation
Channel breakdown
R136
G136
B119
Red136 (53.3%)
Green136 (53.3%)
Blue119 (46.7%)
Hue60°
Saturation (HSL)6.67%
Lightness50%
Dominant channelRed and Green
Hex per channelR 88 · G 88 · B 77
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