643668

643,668 is an even composite number composed of three prime numbers multiplied together.

What does the number 643668 look like?

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

643668 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 643668:

2² × 3 × 53639

(2 × 2 × 3 × 53639)

See below for interesting mathematical facts about the number 643668 from the Numbermatics database.

Names of 643668

Cardinal: 643668 can be written as Six hundred forty-three thousand, six hundred sixty-eight.

Scientific notation

Scientific notation: 6.43668 × 10⁵

Factors of 643668

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 53644

Divisors of 643668

Number of divisors d(n): 12
Complete list of divisors:
1 2 3 4 6 12 53639 107278 160917 214556 321834 643668
Sum of all divisors σ(n): 1501920
Sum of proper divisors (its aliquot sum) s(n): 858252
643668 is an abundant number, because the sum of its proper divisors (858252) is greater than itself. Its abundance is 214584

Bases of 643668

Binary: 10011101001001010100₂
Hexadecimal: 0x9D254
Base-36: DSNO

Squares and roots of 643668

643668 squared (643668²) is 414308494224
643668 cubed (643668³) is 266677119860173632
The square root of 643668 is 802.2892246567
The cube root of 643668 is 86.3417087955

Scales and comparisons

How big is 643668?

643,668 seconds is equal to 1 week, 10 hours, 47 minutes, 48 seconds.
To count from 1 to 643,668 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 643668 cubic inches would be around 7.2 feet tall.

Recreational maths with 643668

643668 backwards is 866346
The number of decimal digits it has is: 6
The sum of 643668's digits is 33
More coming soon!

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The information we have on file for 643668 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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