12516664 has 16 divisors (see below), whose sum is σ = 23968800. Its totient is φ = 6124992.

The previous prime is 12516659. The next prime is 12516683. The reversal of 12516664 is 46661521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16269 + ... + 17020.

It is an arithmetic number, because the mean of its divisors is an integer number (1498050).

Almost surely, 2^12516664 is an apocalyptic number.

It is an amenable number.

12516664 is a deficient number, since it is larger than the sum of its proper divisors (11452136).

12516664 is a wasteful number, since it uses less digits than its factorization.

12516664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33342 (or 33338 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 12516664 is about 3537.8897665134. The cubic root of 12516664 is about 232.1825258015.

The spelling of 12516664 in words is "twelve million, five hundred sixteen thousand, six hundred sixty-four".