# 5645

## 5,645 is an odd composite number composed of two prime numbers multiplied together.

What does the number 5645 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

5645 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 5645:

### 5 × 1129

See below for interesting mathematical facts about the number 5645 from the Numbermatics database.

### Names of 5645

• Cardinal: 5645 can be written as Five thousand, six hundred forty-five.

### Scientific notation

• Scientific notation: 5.645 × 103

### Factors of 5645

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1134

### Divisors of 5645

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 6780
• Sum of proper divisors (its aliquot sum) s(n): 1135
• 5645 is a deficient number, because the sum of its proper divisors (1135) is less than itself. Its deficiency is 4510

### Bases of 5645

• Binary: 10110000011012
• Base-36: 4CT

### Squares and roots of 5645

• 5645 squared (56452) is 31866025
• 5645 cubed (56453) is 179883711125
• The square root of 5645 is 75.1332150249
• The cube root of 5645 is 17.8055194769

### Scales and comparisons

How big is 5645?
• 5,645 seconds is equal to 1 hour, 34 minutes, 5 seconds.
• To count from 1 to 5,645 would take you about thirty-four 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 5645 cubic inches would be around 1.5 feet tall.

### Recreational maths with 5645

• 5645 backwards is 5465
• The number of decimal digits it has is: 4
• The sum of 5645's digits is 20
• More coming soon!