643996

643,996 is an even composite number composed of three prime numbers multiplied together.

What does the number 643996 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

643996 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 643996:

2² × 131 × 1229

(2 × 2 × 131 × 1229)

See below for interesting mathematical facts about the number 643996 from the Numbermatics database.

Names of 643996

Cardinal: 643996 can be written as Six hundred forty-three thousand, nine hundred ninety-six.

Scientific notation

Scientific notation: 6.43996 × 10⁵

Factors of 643996

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 1362

Divisors of 643996

Number of divisors d(n): 12
Complete list of divisors:
1 2 4 131 262 524 1229 2458 4916 160999 321998 643996
Sum of all divisors σ(n): 1136520
Sum of proper divisors (its aliquot sum) s(n): 492524
643996 is a deficient number, because the sum of its proper divisors (492524) is less than itself. Its deficiency is 151472

Bases of 643996

Binary: 10011101001110011100₂
Hexadecimal: 0x9D39C
Base-36: DSWS

Squares and roots of 643996

643996 squared (643996²) is 414730848016
643996 cubed (643996³) is 267085007198911936
The square root of 643996 is 802.4936136817
The cube root of 643996 is 86.3563722925

Scales and comparisons

How big is 643996?

643,996 seconds is equal to 1 week, 10 hours, 53 minutes, 16 seconds.
To count from 1 to 643,996 would take you about ten 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 643996 cubic inches would be around 7.2 feet tall.

Recreational maths with 643996

643996 backwards is 699346
The number of decimal digits it has is: 6
The sum of 643996's digits is 37
More coming soon!

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The information we have on file for 643996 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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