90708690 has 16 divisors (see below), whose sum is σ = 217700928. Its totient is φ = 24188976.

The previous prime is 90708671. The next prime is 90708713. The reversal of 90708690 is 9680709.

It is a super-2 number, since 2×90708690² = 16456132883032200, which contains 22 as substring.

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, 1511782 + ... + 1511841.

It is an arithmetic number, because the mean of its divisors is an integer number (13606308).

Almost surely, 2^90708690 is an apocalyptic number.

90708690 is an abundant number, since it is smaller than the sum of its proper divisors (126992238).

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

90708690 is a wasteful number, since it uses less digits than its factorization.

90708690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023633.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 90708690 is about 9524.1109821337. The cubic root of 90708690 is about 449.3136698057.

The spelling of 90708690 in words is "ninety million, seven hundred eight thousand, six hundred ninety".