166056774 has 16 divisors (see below), whose sum is σ = 357660912. Its totient is φ = 51094368.

The previous prime is 166056733. The next prime is 166056809. The reversal of 166056774 is 477650661.

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 7 ways as a sum of consecutive naturals, for example, 1064389 + ... + 1064544.

It is an arithmetic number, because the mean of its divisors is an integer number (22353807).

Almost surely, 2^166056774 is an apocalyptic number.

166056774 is an abundant number, since it is smaller than the sum of its proper divisors (191604138).

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

166056774 is a wasteful number, since it uses less digits than its factorization.

166056774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128951.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 166056774 is about 12886.3017968694. The cubic root of 166056774 is about 549.6491139322.

The spelling of 166056774 in words is "one hundred sixty-six million, fifty-six thousand, seven hundred seventy-four".