90618804 has 72 divisors (see below), whose sum is σ = 246442560. Its totient is φ = 28741680.

The previous prime is 90618799. The next prime is 90618833. The reversal of 90618804 is 40881609.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474349 + ... + 474539.

Almost surely, 2^90618804 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 90618804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123221280).

90618804 is an abundant number, since it is smaller than the sum of its proper divisors (155823756).

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

90618804 is a wasteful number, since it uses less digits than its factorization.

90618804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 90618804 is about 9519.3909469041. The cubic root of 90618804 is about 449.1652078957.

The spelling of 90618804 in words is "ninety million, six hundred eighteen thousand, eight hundred four".