90604904 has 32 divisors (see below), whose sum is σ = 185697120. Its totient is φ = 41190336.

The previous prime is 90604867. The next prime is 90604907. The reversal of 90604904 is 40940609.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90604907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (5803035).

Almost surely, 2^90604904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90604904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92848560).

90604904 is an abundant number, since it is smaller than the sum of its proper divisors (95092216).

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

90604904 is a wasteful number, since it uses less digits than its factorization.

90604904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13089 (or 13085 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 90604904 is about 9518.6608301798. The cubic root of 90604904 is about 449.1422409346.

The spelling of 90604904 in words is "ninety million, six hundred four thousand, nine hundred four".