# 197

## 197 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 197 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

197 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 197:

### 197

See below for interesting mathematical facts about the number 197 from the Numbermatics database.

### Names of 197

• Cardinal: 197 can be written as One hundred ninety-seven.

### Scientific notation

• Scientific notation: 1.97 × 102

### Factors of 197

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 197

### Divisors of 197

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 198
• Sum of proper divisors (its aliquot sum) s(n): 1
• 197 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 196

### Bases of 197

• Binary: 110001012
• Base-36: 5H

### Squares and roots of 197

• 197 squared (1972) is 38809
• 197 cubed (1973) is 7645373
• The square root of 197 is 14.0356688477
• The cube root of 197 is 5.8186478675

### Scales and comparisons

How big is 197?
• 197 seconds is equal to 3 minutes, 17 seconds.
• To count from 1 to 197 would take you about thirty-eight 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 197 cubic inches would be around 0.5 feet tall.

### Recreational maths with 197

• 197 backwards is 791
• 197 is a twin prime! Its twin is 199
• The number of decimal digits it has is: 3
• The sum of 197's digits is 17
• More coming soon!