90068904 has 48 divisors (see below), whose sum is σ = 247590720. Its totient is φ = 29573280.

The previous prime is 90068903. The next prime is 90068929. The reversal of 90068904 is 40986009.

It is a super-2 number, since 2×90068904² = 16224814935522432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90068903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4512 + ... + 14159.

It is an arithmetic number, because the mean of its divisors is an integer number (5158140).

Almost surely, 2^90068904 is an apocalyptic number.

It is an amenable number.

90068904 is an abundant number, since it is smaller than the sum of its proper divisors (157521816).

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

90068904 is a wasteful number, since it uses less digits than its factorization.

90068904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18750 (or 18743 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 90068904 is about 9490.4638453555. The cubic root of 90068904 is about 448.2548109312.

The spelling of 90068904 in words is "ninety million, sixty-eight thousand, nine hundred four".