12657648 has 40 divisors (see below), whose sum is σ = 34422400. Its totient is φ = 3996864.

The previous prime is 12657637. The next prime is 12657691. The reversal of 12657648 is 84675621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6028 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (860560).

Almost surely, 2^12657648 is an apocalyptic number.

It is an amenable number.

12657648 is an abundant number, since it is smaller than the sum of its proper divisors (21764752).

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

12657648 is a wasteful number, since it uses less digits than its factorization.

12657648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13909 (or 13903 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 12657648 is about 3557.7588451158. The cubic root of 12657648 is about 233.0510181956.

The spelling of 12657648 in words is "twelve million, six hundred fifty-seven thousand, six hundred forty-eight".