91568408 has 16 divisors (see below), whose sum is σ = 175344480. Its totient is φ = 44809888.

The previous prime is 91568401. The next prime is 91568417. The reversal of 91568408 is 80486519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91568401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 121391 + ... + 122142.

It is an arithmetic number, because the mean of its divisors is an integer number (10959030).

Almost surely, 2^91568408 is an apocalyptic number.

It is an amenable number.

91568408 is a deficient number, since it is larger than the sum of its proper divisors (83776072).

91568408 is a wasteful number, since it uses less digits than its factorization.

91568408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243586 (or 243582 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 91568408 is about 9569.1383102137. The cubic root of 91568408 is about 450.7287090375.

The spelling of 91568408 in words is "ninety-one million, five hundred sixty-eight thousand, four hundred eight".