91625164 has 6 divisors (see below), whose sum is σ = 160344044. Its totient is φ = 45812580.

The previous prime is 91625159. The next prime is 91625179. The reversal of 91625164 is 46152619.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11453142 + ... + 11453149.

Almost surely, 2^91625164 is an apocalyptic number.

It is an amenable number.

91625164 is a deficient number, since it is larger than the sum of its proper divisors (68718880).

91625164 is a wasteful number, since it uses less digits than its factorization.

91625164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22906295 (or 22906293 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 91625164 is about 9572.1034261023. The cubic root of 91625164 is about 450.8218134741.

The spelling of 91625164 in words is "ninety-one million, six hundred twenty-five thousand, one hundred sixty-four".