91617964 has 24 divisors (see below), whose sum is σ = 170160480. Its totient is φ = 43013376.

The previous prime is 91617941. The next prime is 91617991. The reversal of 91617964 is 46971619.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91617964.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33289 + ... + 35935.

It is an arithmetic number, because the mean of its divisors is an integer number (7090020).

Almost surely, 2^91617964 is an apocalyptic number.

It is an amenable number.

91617964 is a deficient number, since it is larger than the sum of its proper divisors (78542516).

91617964 is a wasteful number, since it uses less digits than its factorization.

91617964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177 (or 3175 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 91617964 is about 9571.7273258279. The cubic root of 91617964 is about 450.8100044835.

The spelling of 91617964 in words is "ninety-one million, six hundred seventeen thousand, nine hundred sixty-four".