12740664 has 16 divisors (see below), whose sum is σ = 31851720. Its totient is φ = 4246880.

The previous prime is 12740641. The next prime is 12740671. The reversal of 12740664 is 46604721.

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, 265407 + ... + 265454.

Almost surely, 2^12740664 is an apocalyptic number.

It is an amenable number.

12740664 is an abundant number, since it is smaller than the sum of its proper divisors (19111056).

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

12740664 is a wasteful number, since it uses less digits than its factorization.

12740664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530870 (or 530866 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 12740664 is about 3569.4066733842. The cubic root of 12740664 is about 233.5594017612.

The spelling of 12740664 in words is "twelve million, seven hundred forty thousand, six hundred sixty-four".