90003664 has 20 divisors (see below), whose sum is σ = 180008320. Its totient is φ = 43549920.

The previous prime is 90003659. The next prime is 90003679. The reversal of 90003664 is 46630009.

90003664 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 90234 + ... + 91225.

It is an arithmetic number, because the mean of its divisors is an integer number (9000416).

Almost surely, 2^90003664 is an apocalyptic number.

It is an amenable number.

90003664 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90003664 is a wasteful number, since it uses less digits than its factorization.

90003664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181498 (or 181492 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 90003664 is about 9487.0260882955. The cubic root of 90003664 is about 448.1465560054.

The spelling of 90003664 in words is "ninety million, three thousand, six hundred sixty-four".