681990

681,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 681990 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

681990 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 681990:

2 × 3 × 5 × 127 × 179

See below for interesting mathematical facts about the number 681990 from the Numbermatics database.

Names of 681990

Cardinal: 681990 can be written as Six hundred eighty-one thousand, nine hundred ninety.

Scientific notation

Scientific notation: 6.8199 × 10⁵

Factors of 681990

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 316

Divisors of 681990

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 5 6 10 15 30 127 179 254 358 381 537 635 762 895 1074 1270 1790 1905 2685 3810 5370 22733 45466 68199 113665 136398 227330 340995 681990
Sum of all divisors σ(n): 1658880
Sum of proper divisors (its aliquot sum) s(n): 976890
681990 is an abundant number, because the sum of its proper divisors (976890) is greater than itself. Its abundance is 294900

Bases of 681990

Binary: 10100110100000000110₂
Hexadecimal: 0xA6806
Base-36: EM86

Squares and roots of 681990

681990 squared (681990²) is 465110360100
681990 cubed (681990³) is 317200614484599000
The square root of 681990 is 825.8268583669
The cube root of 681990 is 88.0222911849

Scales and comparisons

How big is 681990?

681,990 seconds is equal to 1 week, 21 hours, 26 minutes, 30 seconds.
To count from 1 to 681,990 would take you about twenty-one hours!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 681990 cubic inches would be around 7.3 feet tall.

Recreational maths with 681990

681990 backwards is 099186
The number of decimal digits it has is: 6
The sum of 681990's digits is 33
More coming soon!

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The information we have on file for 681990 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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