# 6691

## 6,691 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 6691 look like?

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

6691 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 6691:

### 6691

See below for interesting mathematical facts about the number 6691 from the Numbermatics database.

### Names of 6691

• Cardinal: 6691 can be written as Six thousand, six hundred ninety-one.

### Scientific notation

• Scientific notation: 6.691 × 103

### Factors of 6691

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 6691

### Divisors of 6691

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 6692
• Sum of proper divisors (its aliquot sum) s(n): 1
• 6691 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 6690

### Bases of 6691

• Binary: 11010001000112
• Base-36: 55V

### Squares and roots of 6691

• 6691 squared (66912) is 44769481
• 6691 cubed (66913) is 299552597371
• The square root of 6691 is 81.7985329941
• The cube root of 6691 is 18.8435913177

### Scales and comparisons

How big is 6691?
• 6,691 seconds is equal to 1 hour, 51 minutes, 31 seconds.
• To count from 1 to 6,691 would take you about fifty-one 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 6691 cubic inches would be around 1.6 feet tall.

### Recreational maths with 6691

• 6691 backwards is 1966
• The number of decimal digits it has is: 4
• The sum of 6691's digits is 22
• More coming soon!