91074864 has 40 divisors (see below), whose sum is σ = 236282992. Its totient is φ = 30228480.

The previous prime is 91074853. The next prime is 91074881. The reversal of 91074864 is 46847019.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7632 + ... + 15504.

Almost surely, 2^91074864 is an apocalyptic number.

It is an amenable number.

91074864 is an abundant number, since it is smaller than the sum of its proper divisors (145208128).

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

91074864 is a wasteful number, since it uses less digits than its factorization.

91074864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8125 (or 8119 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 91074864 is about 9543.3151472641. The cubic root of 91074864 is about 449.9174564649.

The spelling of 91074864 in words is "ninety-one million, seventy-four thousand, eight hundred sixty-four".