The Number

166

One Hundred and Sixty-Six

Nearby Numbers

Positive, nonzero integers within three units

163
One Hundred and Sixty-Three
164
One Hundred and Sixty-Four
165
One Hundred and Sixty-Five
167
One Hundred and Sixty-Seven
168
One Hundred and Sixty-Eight
169
One Hundred and Sixty-Nine

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.66e2

Reciprocal

A number multiplied with its reciprocal is one.

0.006024096385542169

The reciprocal of 166.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 166 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One hundred and sixty-six is a composite number with 4 total factors (including 1 and itself).   See primes in Base 10 Decimal

A Composite

Composites have more than just these two factors.

One hundred and sixty-six is a composite number with 4 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one hundred and sixty-six has the following 2 prime factors:

2
Two
83
Eighty-Three

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

21 · 831 = 166

Base Conversions

The number one hundred and sixty-six in 35 different bases