91787468 has 12 divisors (see below), whose sum is σ = 160730472. Its totient is φ = 45864480.

The previous prime is 91787401. The next prime is 91787477. The reversal of 91787468 is 86478719.

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, 728 + ... + 13568.

It is an arithmetic number, because the mean of its divisors is an integer number (13394206).

Almost surely, 2^91787468 is an apocalyptic number.

It is an amenable number.

91787468 is a deficient number, since it is larger than the sum of its proper divisors (68943004).

91787468 is a wasteful number, since it uses less digits than its factorization.

91787468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14632 (or 14630 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 91787468 is about 9580.5776443803. The cubic root of 91787468 is about 451.0878503667.

The spelling of 91787468 in words is "ninety-one million, seven hundred eighty-seven thousand, four hundred sixty-eight".