# 6921

## 6,921 is an odd composite number composed of two prime numbers multiplied together.

What does the number 6921 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

6921 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

## Prime factorization of 6921:

### 32 × 769

(3 × 3 × 769)

See below for interesting mathematical facts about the number 6921 from the Numbermatics database.

### Names of 6921

• Cardinal: 6921 can be written as Six thousand, nine hundred twenty-one.

### Scientific notation

• Scientific notation: 6.921 × 103

### Factors of 6921

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 772

### Divisors of 6921

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 10010
• Sum of proper divisors (its aliquot sum) s(n): 3089
• 6921 is a deficient number, because the sum of its proper divisors (3089) is less than itself. Its deficiency is 3832

### Bases of 6921

• Binary: 11011000010012
• Base-36: 5C9

### Squares and roots of 6921

• 6921 squared (69212) is 47900241
• 6921 cubed (69213) is 331517567961
• The square root of 6921 is 83.1925477431
• The cube root of 6921 is 19.0570767517

### Scales and comparisons

How big is 6921?
• 6,921 seconds is equal to 1 hour, 55 minutes, 21 seconds.
• To count from 1 to 6,921 would take you about fifty-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 6921 cubic inches would be around 1.6 feet tall.

### Recreational maths with 6921

• 6921 backwards is 1296
• The number of decimal digits it has is: 4
• The sum of 6921's digits is 18
• More coming soon!