166564974 has 32 divisors (see below), whose sum is σ = 337602816. Its totient is φ = 54780800.

The previous prime is 166564961. The next prime is 166565017. The reversal of 166564974 is 479465661.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257119 + ... + 257765.

It is an arithmetic number, because the mean of its divisors is an integer number (10550088).

Almost surely, 2^166564974 is an apocalyptic number.

166564974 is an abundant number, since it is smaller than the sum of its proper divisors (171037842).

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

166564974 is a wasteful number, since it uses less digits than its factorization.

166564974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160.

The product of its digits is 1088640, while the sum is 48.

The square root of 166564974 is about 12906.0053463494. The cubic root of 166564974 is about 550.2092581147.

The spelling of 166564974 in words is "one hundred sixty-six million, five hundred sixty-four thousand, nine hundred seventy-four".