90690680 has 32 divisors (see below), whose sum is σ = 204603840. Its totient is φ = 36178560.

The previous prime is 90690661. The next prime is 90690703. The reversal of 90690680 is 8609609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13025 + ... + 18735.

It is an arithmetic number, because the mean of its divisors is an integer number (6393870).

Almost surely, 2^90690680 is an apocalyptic number.

It is an amenable number.

90690680 is an abundant number, since it is smaller than the sum of its proper divisors (113913160).

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

90690680 is a wasteful number, since it uses less digits than its factorization.

90690680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6119 (or 6115 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 90690680 is about 9523.1654401255. The cubic root of 90690680 is about 449.2839311084.

The spelling of 90690680 in words is "ninety million, six hundred ninety thousand, six hundred eighty".