91634856 has 64 divisors (see below), whose sum is σ = 234289920. Its totient is φ = 29859840.

The previous prime is 91634843. The next prime is 91634857. The reversal of 91634856 is 65843619.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91634857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338001 + ... + 338271.

It is an arithmetic number, because the mean of its divisors is an integer number (3660780).

Almost surely, 2^91634856 is an apocalyptic number.

It is an amenable number.

91634856 is an abundant number, since it is smaller than the sum of its proper divisors (142655064).

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

91634856 is a wasteful number, since it uses less digits than its factorization.

91634856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 542 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 91634856 is about 9572.6096755274. The cubic root of 91634856 is about 450.8377087106.

The spelling of 91634856 in words is "ninety-one million, six hundred thirty-four thousand, eight hundred fifty-six".