91698864 has 40 divisors (see below), whose sum is σ = 249359040. Its totient is φ = 28957248.

The previous prime is 91698811. The next prime is 91698881. The reversal of 91698864 is 46889619.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49362 + ... + 51185.

It is an arithmetic number, because the mean of its divisors is an integer number (6233976).

Almost surely, 2^91698864 is an apocalyptic number.

It is an amenable number.

91698864 is an abundant number, since it is smaller than the sum of its proper divisors (157660176).

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

91698864 is a wasteful number, since it uses less digits than its factorization.

91698864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100577 (or 100571 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 91698864 is about 9575.9523808340. The cubic root of 91698864 is about 450.9426560523.

The spelling of 91698864 in words is "ninety-one million, six hundred ninety-eight thousand, eight hundred sixty-four".