91665364 has 12 divisors (see below), whose sum is σ = 183330784. Its totient is φ = 39285144.

The previous prime is 91665341. The next prime is 91665383. The reversal of 91665364 is 46356619.

91665364 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1636854 + ... + 1636909.

Almost surely, 2^91665364 is an apocalyptic number.

It is an amenable number.

91665364 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91665364 is a wasteful number, since it uses less digits than its factorization.

91665364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273774 (or 3273772 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 91665364 is about 9574.2030477737. The cubic root of 91665364 is about 450.8877356374.

It can be divided in two parts, 91665 and 364, that added together give a palindrome (92029).

The spelling of 91665364 in words is "ninety-one million, six hundred sixty-five thousand, three hundred sixty-four".