90204664 has 32 divisors (see below), whose sum is σ = 185713200. Its totient is φ = 40734720.

The previous prime is 90204629. The next prime is 90204677. The reversal of 90204664 is 46640209.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10552 + ... + 17080.

Almost surely, 2^90204664 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 90204664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92856600).

90204664 is an abundant number, since it is smaller than the sum of its proper divisors (95508536).

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

90204664 is a wasteful number, since it uses less digits than its factorization.

90204664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703 (or 6699 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 90204664 is about 9497.6135950037. The cubic root of 90204664 is about 448.4799146040.

The spelling of 90204664 in words is "ninety million, two hundred four thousand, six hundred sixty-four".