12791646 has 36 divisors (see below), whose sum is σ = 32242392. Its totient is φ = 3654504.

The previous prime is 12791627. The next prime is 12791659. The reversal of 12791646 is 64619721.

12791646 is a `hidden beast` number, since 1 + 2 + 7 + 9 + 1 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12791646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6370 + ... + 8133.

It is an arithmetic number, because the mean of its divisors is an integer number (895622).

Almost surely, 2^12791646 is an apocalyptic number.

12791646 is an abundant number, since it is smaller than the sum of its proper divisors (19450746).

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

12791646 is a wasteful number, since it uses less digits than its factorization.

12791646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14525 (or 14515 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 12791646 is about 3576.5410664495. The cubic root of 12791646 is about 233.8705178897.

The spelling of 12791646 in words is "twelve million, seven hundred ninety-one thousand, six hundred forty-six".