Number
720,007
- Positive
- Odd
- Prime
- 6 digits
720,007 is an odd 6-digit integer and a prime number. It has 2 divisors and a digital root of 7.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value720,007
Digit count6
Digit sum16
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation720,007
Distinct prime factors1720,007
Number of divisors2
Sum of divisors σ(n)720,008
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)720,006integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 720,0072 in total
Arithmetic
Representations
Decimal720,007
Binary1010111111001000011120 bits
Octal2576207
HexadecimalAFC87
Base 36FFK7
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsseven hundred and twenty thousand and seven
Ordinalseven hundred and twenty thousand and seventh
Scientific notation7.20007 × 10^5
Engineering notation720.007 × 10^3
Nearest landmarks
Powers & multiples
720,007 to the power 2518,410,080,049
720,007 to the power 3373,258,886,505,840,343
720,007 to the power 4268,749,011,096,410,587,842,401
720,007 to the power 5193,501,169,232,493,298,120,643,616,807
First ten multiples720,007, 1,440,014, 2,160,021, 2,880,028, 3,600,035, 4,320,042, 5,040,049, 5,760,056, 6,480,063, 7,200,070
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 3
Divisible by 5No, remainder 2
Divisible by 6No, remainder 1
Divisible by 7No, remainder 1
Divisible by 8No, remainder 7
Divisible by 9No, remainder 7
Divisible by 10No, remainder 7
Divisible by 11No, remainder 2
Divisible by 12No, remainder 7
Divisible by 100No, remainder 7
Collatz (3n + 1) trajectory
Steps to reach 1198the total stopping time
Highest value reached4,860,0526× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps720,007 → 2,160,022 → 1,080,011 → 3,240,034 → 1,620,017 → 4,860,052 → 2,430,026 → 1,215,013 → 3,645,040 → 1,822,520 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage72,000,700%
720,007% as a decimal7,200.07
720,007% of 100720,007
720,007% of 1,0007,200,070
As a fraction of 100720,007/100
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Derived from 720,007
Also reads as
#720007 (colour)
- #720007
- Red
- Dark
- Nearest: Maroon
#720007 is a red with RGB values 114, 0, 7 and HSL 356°, 100%, 22%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#720007#720007
HEX#720007
RGBrgb(114, 0, 7)
RGB (0–1)0.4471, 0, 0.0275
RGB percentages44.7%, 0%, 2.7%
HSLhsl(356.3, 100%, 22.4%)
HSV / HSBhsv(356.3, 100%, 44.7%)
CMYK0%, 100%, 93.9%, 55.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,471,111
CSS custom property--colour: #720007;
Brightness & contrast
Relative luminance0.03593WCAG 2.x, 0 is black and 1 is white
Perceived brightness62.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.22:1
Contrast with white12.22:1WCAG normal text: AAA
Contrast with black1.72:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#8DFFF8
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.22:1WCAG large text: AAA
Contrast with black, large text1.72:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#00726B
Analogous#720040, #723200
Triadic#077200, #000772
Split complementary#007232, #004072
Tetradic#407200, #00726B, #320072
Tints, shades & saturation
Channel breakdown
R114
G0
B7
Red114 (44.7%)
Green0 (0%)
Blue7 (2.7%)
Hue356.32°
Saturation (HSL)100%
Lightness22.35%
Dominant channelRed
Hex per channelR 72 · G 00 · B 07
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