91651264 has 28 divisors (see below), whose sum is σ = 182422800. Its totient is φ = 45686528.

The previous prime is 91651253. The next prime is 91651303. The reversal of 91651264 is 46215619.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20982 + ... + 24970.

It is an arithmetic number, because the mean of its divisors is an integer number (6515100).

Almost surely, 2^91651264 is an apocalyptic number.

It is an amenable number.

91651264 is a deficient number, since it is larger than the sum of its proper divisors (90771536).

91651264 is a wasteful number, since it uses less digits than its factorization.

91651264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360 (or 4350 counting only the distinct ones).

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

The square root of 91651264 is about 9573.4666657382. The cubic root of 91651264 is about 450.8646158795.

The spelling of 91651264 in words is "ninety-one million, six hundred fifty-one thousand, two hundred sixty-four".