# 863

## 863 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 863 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

863 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 863:

### 863

See below for interesting mathematical facts about the number 863 from the Numbermatics database.

### Names of 863

• Cardinal: 863 can be written as Eight hundred sixty-three.

### Scientific notation

• Scientific notation: 8.63 × 102

### Factors of 863

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 863

### Divisors of 863

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 864
• Sum of proper divisors (its aliquot sum) s(n): 1
• 863 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 862

### Bases of 863

• Binary: 11010111112
• Base-36: NZ

### Squares and roots of 863

• 863 squared (8632) is 744769
• 863 cubed (8633) is 642735647
• The square root of 863 is 29.3768616431
• The cube root of 863 is 9.5207303535

### Scales and comparisons

How big is 863?
• 863 seconds is equal to 14 minutes, 23 seconds.
• To count from 1 to 863 would take you about seven 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 863 cubic inches would be around 0.8 feet tall.

### Recreational maths with 863

• 863 backwards is 368
• The number of decimal digits it has is: 3
• The sum of 863's digits is 17
• More coming soon!

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The information we have on file for 863 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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