12634657 has 4 divisors (see below), whose sum is σ = 14439616. Its totient is φ = 10829700.

The previous prime is 12634651. The next prime is 12634693. The reversal of 12634657 is 75643621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12634657 - 2²³ = 4246049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12634651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902469 + ... + 902482.

It is an arithmetic number, because the mean of its divisors is an integer number (3609904).

Almost surely, 2^12634657 is an apocalyptic number.

It is an amenable number.

12634657 is a deficient number, since it is larger than the sum of its proper divisors (1804959).

12634657 is an equidigital number, since it uses as much as digits as its factorization.

12634657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804958.

The product of its digits is 30240, while the sum is 34.

The square root of 12634657 is about 3554.5262694204. The cubic root of 12634657 is about 232.9098302139.

The spelling of 12634657 in words is "twelve million, six hundred thirty-four thousand, six hundred fifty-seven".