12957716 has 6 divisors (see below), whose sum is σ = 22676010. Its totient is φ = 6478856.

The previous prime is 12957673. The next prime is 12957731. The reversal of 12957716 is 61775921.

It can be written as a sum of positive squares in only one way, i.e., 12602500 + 355216 = 3550^2 + 596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12957716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1619711 + ... + 1619718.

It is an arithmetic number, because the mean of its divisors is an integer number (3779335).

Almost surely, 2^12957716 is an apocalyptic number.

It is an amenable number.

12957716 is a deficient number, since it is larger than the sum of its proper divisors (9718294).

12957716 is a wasteful number, since it uses less digits than its factorization.

12957716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239433 (or 3239431 counting only the distinct ones).

The product of its digits is 26460, while the sum is 38.

The square root of 12957716 is about 3599.6827638002. The cubic root of 12957716 is about 234.8782589593.

The spelling of 12957716 in words is "twelve million, nine hundred fifty-seven thousand, seven hundred sixteen".