91636656 has 40 divisors (see below), whose sum is σ = 237328560. Its totient is φ = 30468096.

The previous prime is 91636631. The next prime is 91636693. The reversal of 91636656 is 65663619.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 18580 + ... + 22988.

It is an arithmetic number, because the mean of its divisors is an integer number (5933214).

Almost surely, 2^91636656 is an apocalyptic number.

It is an amenable number.

91636656 is an abundant number, since it is smaller than the sum of its proper divisors (145691904).

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

91636656 is a wasteful number, since it uses less digits than its factorization.

91636656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4853 (or 4847 counting only the distinct ones).

The product of its digits is 174960, while the sum is 42.

The square root of 91636656 is about 9572.7036933147. The cubic root of 91636656 is about 450.8406606534.

The spelling of 91636656 in words is "ninety-one million, six hundred thirty-six thousand, six hundred fifty-six".