91296690 has 16 divisors (see below), whose sum is σ = 219112128. Its totient is φ = 24345776.

The previous prime is 91296677. The next prime is 91296713. The reversal of 91296690 is 9669219.

It is a happy number.

It is a super-2 number, since 2×91296690² = 16670171209912200, 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 7 ways as a sum of consecutive naturals, for example, 1521582 + ... + 1521641.

It is an arithmetic number, because the mean of its divisors is an integer number (13694508).

Almost surely, 2^91296690 is an apocalyptic number.

91296690 is an abundant number, since it is smaller than the sum of its proper divisors (127815438).

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

91296690 is a wasteful number, since it uses less digits than its factorization.

91296690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043233.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 91296690 is about 9554.9301410319. The cubic root of 91296690 is about 450.2824399750.

The spelling of 91296690 in words is "ninety-one million, two hundred ninety-six thousand, six hundred ninety".