91306764 has 36 divisors (see below), whose sum is σ = 239354024. Its totient is φ = 30435264.

The previous prime is 91306763. The next prime is 91306769. The reversal of 91306764 is 46760319.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (91306763) 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 11 ways as a sum of consecutive naturals, for example, 45997 + ... + 47940.

Almost surely, 2^91306764 is an apocalyptic number.

It is an amenable number.

91306764 is an abundant number, since it is smaller than the sum of its proper divisors (148047260).

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

91306764 is a wasteful number, since it uses less digits than its factorization.

91306764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93956 (or 93942 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 91306764 is about 9555.4572889004. The cubic root of 91306764 is about 450.2990012854.

The spelling of 91306764 in words is "ninety-one million, three hundred six thousand, seven hundred sixty-four".