91264690 has 32 divisors (see below), whose sum is σ = 187007616. Its totient is φ = 31743360.

The previous prime is 91264661. The next prime is 91264717. The reversal of 91264690 is 9646219.

It is a super-2 number, since 2×91264690² = 16658487281592200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 15507 + ... + 20566.

It is an arithmetic number, because the mean of its divisors is an integer number (5843988).

Almost surely, 2^91264690 is an apocalyptic number.

91264690 is an abundant number, since it is smaller than the sum of its proper divisors (95742926).

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

91264690 is a wasteful number, since it uses less digits than its factorization.

91264690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36114.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 91264690 is about 9553.2554660702. The cubic root of 91264690 is about 450.2298249901.

The spelling of 91264690 in words is "ninety-one million, two hundred sixty-four thousand, six hundred ninety".