91317604 has 48 divisors (see below), whose sum is σ = 187407360. Its totient is φ = 38126880.

The previous prime is 91317587. The next prime is 91317617. The reversal of 91317604 is 40671319.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275719 + ... + 276049.

It is an arithmetic number, because the mean of its divisors is an integer number (3904320).

Almost surely, 2^91317604 is an apocalyptic number.

It is an amenable number.

91317604 is an abundant number, since it is smaller than the sum of its proper divisors (96089756).

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

91317604 is a wasteful number, since it uses less digits than its factorization.

91317604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 91317604 is about 9556.0244872018. The cubic root of 91317604 is about 450.3168205130.

The spelling of 91317604 in words is "ninety-one million, three hundred seventeen thousand, six hundred four".