# 664

## 664 is an even composite number composed of two prime numbers multiplied together.

What does the number 664 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

664 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 664:

### 23 × 83

(2 × 2 × 2 × 83)

See below for interesting mathematical facts about the number 664 from the Numbermatics database.

### Names of 664

• Cardinal: 664 can be written as Six hundred sixty-four.

### Scientific notation

• Scientific notation: 6.64 × 102

### Factors of 664

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 85

### Divisors of 664

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 1260
• Sum of proper divisors (its aliquot sum) s(n): 596
• 664 is a deficient number, because the sum of its proper divisors (596) is less than itself. Its deficiency is 68

### Bases of 664

• Binary: 10100110002
• Base-36: IG

### Squares and roots of 664

• 664 squared (6642) is 440896
• 664 cubed (6643) is 292754944
• The square root of 664 is 25.7681974535
• The cube root of 664 is 8.7241413429

### Scales and comparisons

How big is 664?
• 664 seconds is equal to 11 minutes, 4 seconds.
• To count from 1 to 664 would take you about five minutes.

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 664 cubic inches would be around 0.7 feet tall.

### Recreational maths with 664

• 664 backwards is 466
• The number of decimal digits it has is: 3
• The sum of 664's digits is 16
• More coming soon!

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"Number 664 - Facts about the integer". Numbermatics.com. 2023. Web. 9 June 2023.

APA style:
Numbermatics. (2023). Number 664 - Facts about the integer. Retrieved 9 June 2023, from https://numbermatics.com/n/664/

Chicago style:
Numbermatics. 2023. "Number 664 - Facts about the integer". https://numbermatics.com/n/664/

The information we have on file for 664 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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