640489

640,489 is an odd composite number composed of two prime numbers multiplied together.

What does the number 640489 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

640489 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 640489:

269 × 2381

See below for interesting mathematical facts about the number 640489 from the Numbermatics database.

Names of 640489

Cardinal: 640489 can be written as Six hundred forty thousand, four hundred eighty-nine.

Scientific notation

Scientific notation: 6.40489 × 10⁵

Factors of 640489

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 2650

Divisors of 640489

Number of divisors d(n): 4
Complete list of divisors:
1 269 2381 640489
Sum of all divisors σ(n): 643140
Sum of proper divisors (its aliquot sum) s(n): 2651
640489 is a deficient number, because the sum of its proper divisors (2651) is less than itself. Its deficiency is 637838

Bases of 640489

Binary: 10011100010111101001₂
Hexadecimal: 0x9C5E9
Base-36: DQ7D

Squares and roots of 640489

640489 squared (640489²) is 410226159121
640489 cubed (640489³) is 262745342429250169
The square root of 640489 is 800.3055666431
The cube root of 640489 is 86.1993303171

Scales and comparisons

How big is 640489?

640,489 seconds is equal to 1 week, 9 hours, 54 minutes, 49 seconds.
To count from 1 to 640,489 would take you about nine 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 640489 cubic inches would be around 7.2 feet tall.

Recreational maths with 640489

640489 backwards is 984046
The number of decimal digits it has is: 6
The sum of 640489's digits is 31
More coming soon!

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The information we have on file for 640489 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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