166557164 has 24 divisors (see below), whose sum is σ = 298369008. Its totient is φ = 81323840.

The previous prime is 166557161. The next prime is 166557169. The reversal of 166557164 is 461755661.

It is not an unprimeable number, because it can be changed into a prime (166557161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46394 + ... + 49854.

It is an arithmetic number, because the mean of its divisors is an integer number (12432042).

Almost surely, 2^166557164 is an apocalyptic number.

It is an amenable number.

166557164 is a deficient number, since it is larger than the sum of its proper divisors (131811844).

166557164 is a wasteful number, since it uses less digits than its factorization.

166557164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745 (or 3743 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 166557164 is about 12905.7027704810. The cubic root of 166557164 is about 550.2006584646.

The spelling of 166557164 in words is "one hundred sixty-six million, five hundred fifty-seven thousand, one hundred sixty-four".