12657207 has 8 divisors (see below), whose sum is σ = 17420800. Its totient is φ = 8165880.

The previous prime is 12657191. The next prime is 12657209. The reversal of 12657207 is 70275621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12657207 - 2⁴ = 12657191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67957 + ... + 68142.

It is an arithmetic number, because the mean of its divisors is an integer number (2177600).

Almost surely, 2^12657207 is an apocalyptic number.

12657207 is a deficient number, since it is larger than the sum of its proper divisors (4763593).

12657207 is a wasteful number, since it uses less digits than its factorization.

12657207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136133.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 12657207 is about 3557.6968673567. The cubic root of 12657207 is about 233.0483116188.

The spelling of 12657207 in words is "twelve million, six hundred fifty-seven thousand, two hundred seven".