18714664 has 8 divisors (see below), whose sum is σ = 35090010. Its totient is φ = 9357328.

The previous prime is 18714659. The next prime is 18714679. The reversal of 18714664 is 46641781.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 5098564 = 3690^2 + 2258^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1169659 + ... + 1169674.

Almost surely, 2^18714664 is an apocalyptic number.

It is an amenable number.

18714664 is a deficient number, since it is larger than the sum of its proper divisors (16375346).

18714664 is a wasteful number, since it uses less digits than its factorization.

18714664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339339 (or 2339335 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 18714664 is about 4326.0448448901. The cubic root of 18714664 is about 265.4976479990.

The spelling of 18714664 in words is "eighteen million, seven hundred fourteen thousand, six hundred sixty-four".