668990

668,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 668990 look like?

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

668990 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 668990:

2 × 5 × 7 × 19 × 503

See below for interesting mathematical facts about the number 668990 from the Numbermatics database.

Names of 668990

Cardinal: 668990 can be written as Six hundred sixty-eight thousand, nine hundred ninety.

Scientific notation

Scientific notation: 6.6899 × 10⁵

Factors of 668990

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 536

Divisors of 668990

Number of divisors d(n): 32
Complete list of divisors:
1 2 5 7 10 14 19 35 38 70 95 133 190 266 503 665 1006 1330 2515 3521 5030 7042 9557 17605 19114 35210 47785 66899 95570 133798 334495 668990
Sum of all divisors σ(n): 1451520
Sum of proper divisors (its aliquot sum) s(n): 782530
668990 is an abundant number, because the sum of its proper divisors (782530) is greater than itself. Its abundance is 113540

Bases of 668990

Binary: 10100011010100111110₂
Hexadecimal: 0xA353E
Base-36: EC72

Squares and roots of 668990

668990 squared (668990²) is 447547620100
668990 cubed (668990³) is 299404882370699000
The square root of 668990 is 817.9180888087
The cube root of 668990 is 87.4594097449

Scales and comparisons

How big is 668990?

668,990 seconds is equal to 1 week, 17 hours, 49 minutes, 50 seconds.
To count from 1 to 668,990 would take you about seventeen 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 668990 cubic inches would be around 7.3 feet tall.

Recreational maths with 668990

668990 backwards is 099866
668990 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 668990's digits is 38
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The information we have on file for 668990 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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