91337864 has 32 divisors (see below), whose sum is σ = 181116000. Its totient is φ = 43062912.

The previous prime is 91337861. The next prime is 91337887. The reversal of 91337864 is 46873319.

It is not an unprimeable number, because it can be changed into a prime (91337861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34127 + ... + 36705.

It is an arithmetic number, because the mean of its divisors is an integer number (5659875).

Almost surely, 2^91337864 is an apocalyptic number.

It is an amenable number.

91337864 is a deficient number, since it is larger than the sum of its proper divisors (89778136).

91337864 is a wasteful number, since it uses less digits than its factorization.

91337864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837 (or 2833 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 91337864 is about 9557.0844926683. The cubic root of 91337864 is about 450.3501209346.

The spelling of 91337864 in words is "ninety-one million, three hundred thirty-seven thousand, eight hundred sixty-four".