16664504 has 16 divisors (see below), whose sum is σ = 32091000. Its totient is φ = 8106912.

The previous prime is 16664477. The next prime is 16664507. The reversal of 16664504 is 40546661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27854 + ... + 28445.

Almost surely, 2^16664504 is an apocalyptic number.

It is an amenable number.

16664504 is a deficient number, since it is larger than the sum of its proper divisors (15426496).

16664504 is a wasteful number, since it uses less digits than its factorization.

16664504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56342 (or 56338 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 16664504 is about 4082.2180245548. The cubic root of 16664504 is about 255.4254285075.

The spelling of 16664504 in words is "sixteen million, six hundred sixty-four thousand, five hundred four".