166964172 has 24 divisors (see below), whose sum is σ = 410088000. Its totient is φ = 52725456.

The previous prime is 166964143. The next prime is 166964179. The reversal of 166964172 is 271469661.

It is not an unprimeable number, because it can be changed into a prime (166964179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365922 + ... + 366377.

It is an arithmetic number, because the mean of its divisors is an integer number (17087000).

Almost surely, 2^166964172 is an apocalyptic number.

166964172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166964172 is an abundant number, since it is smaller than the sum of its proper divisors (243123828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166964172 is a wasteful number, since it uses less digits than its factorization.

166964172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732325 (or 732323 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 166964172 is about 12921.4616820234. The cubic root of 166964172 is about 550.6484604966.

The spelling of 166964172 in words is "one hundred sixty-six million, nine hundred sixty-four thousand, one hundred seventy-two".