# 2661

## 2,661 is an odd composite number composed of two prime numbers multiplied together.

What does the number 2661 look like?

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

2661 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 2661:

### 3 × 887

See below for interesting mathematical facts about the number 2661 from the Numbermatics database.

### Names of 2661

• Cardinal: 2661 can be written as Two thousand, six hundred sixty-one.

### Scientific notation

• Scientific notation: 2.661 × 103

### Factors of 2661

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 890

### Divisors of 2661

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 3552
• Sum of proper divisors (its aliquot sum) s(n): 891
• 2661 is a deficient number, because the sum of its proper divisors (891) is less than itself. Its deficiency is 1770

### Bases of 2661

• Binary: 1010011001012
• Base-36: 21X

### Squares and roots of 2661

• 2661 squared (26612) is 7080921
• 2661 cubed (26613) is 18842330781
• The square root of 2661 is 51.5848815061
• The cube root of 2661 is 13.8573959031

### Scales and comparisons

How big is 2661?
• 2,661 seconds is equal to 44 minutes, 21 seconds.
• To count from 1 to 2,661 would take you about forty-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 2661 cubic inches would be around 1.2 feet tall.

### Recreational maths with 2661

• 2661 backwards is 1662
• The number of decimal digits it has is: 4
• The sum of 2661's digits is 15
• More coming soon!