# 3681

## 3,681 is an odd composite number composed of two prime numbers multiplied together.

What does the number 3681 look like?

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

3681 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 3681:

### 32 × 409

(3 × 3 × 409)

See below for interesting mathematical facts about the number 3681 from the Numbermatics database.

### Names of 3681

• Cardinal: 3681 can be written as Three thousand, six hundred eighty-one.

### Scientific notation

• Scientific notation: 3.681 × 103

### Factors of 3681

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 412

### Divisors of 3681

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 5330
• Sum of proper divisors (its aliquot sum) s(n): 1649
• 3681 is a deficient number, because the sum of its proper divisors (1649) is less than itself. Its deficiency is 2032

### Bases of 3681

• Binary: 1110011000012
• Base-36: 2U9

### Squares and roots of 3681

• 3681 squared (36812) is 13549761
• 3681 cubed (36813) is 49876670241
• The square root of 3681 is 60.6712452485
• The cube root of 3681 is 15.4402835819

### Scales and comparisons

How big is 3681?
• 3,681 seconds is equal to 1 hour, 1 minute, 21 seconds.
• To count from 1 to 3,681 would take you about twenty-one seconds.

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 3681 cubic inches would be around 1.3 feet tall.

### Recreational maths with 3681

• 3681 backwards is 1863
• The number of decimal digits it has is: 4
• The sum of 3681's digits is 18
• More coming soon!