90804664 has 8 divisors (see below), whose sum is σ = 170258760. Its totient is φ = 45402328.

The previous prime is 90804643. The next prime is 90804671. The reversal of 90804664 is 46640809.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 5675284 + ... + 5675299.

It is an arithmetic number, because the mean of its divisors is an integer number (21282345).

Almost surely, 2^90804664 is an apocalyptic number.

It is an amenable number.

90804664 is a deficient number, since it is larger than the sum of its proper divisors (79454096).

90804664 is a wasteful number, since it uses less digits than its factorization.

90804664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11350589 (or 11350585 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 90804664 is about 9529.1481256196. The cubic root of 90804664 is about 449.4720788496.

The spelling of 90804664 in words is "ninety million, eight hundred four thousand, six hundred sixty-four".