# 671

## 671 is an odd composite number composed of two prime numbers multiplied together.

What does the number 671 look like?

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

671 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 671:

### 11 × 61

See below for interesting mathematical facts about the number 671 from the Numbermatics database.

### Names of 671

• Cardinal: 671 can be written as Six hundred seventy-one.

### Scientific notation

• Scientific notation: 6.71 × 102

### Factors of 671

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 72

### Divisors of 671

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 744
• Sum of proper divisors (its aliquot sum) s(n): 73
• 671 is a deficient number, because the sum of its proper divisors (73) is less than itself. Its deficiency is 598

### Bases of 671

• Binary: 10100111112
• Base-36: IN

### Squares and roots of 671

• 671 squared (6712) is 450241
• 671 cubed (6713) is 302111711
• The square root of 671 is 25.9036676941
• The cube root of 671 is 8.7546913619

### Scales and comparisons

How big is 671?
• 671 seconds is equal to 11 minutes, 11 seconds.
• To count from 1 to 671 would take you about 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 671 cubic inches would be around 0.7 feet tall.

### Recreational maths with 671

• 671 backwards is 176
• The number of decimal digits it has is: 3
• The sum of 671's digits is 14
• More coming soon!