12732657 has 16 divisors (see below), whose sum is σ = 19494912. Its totient is φ = 7241040.

The previous prime is 12732647. The next prime is 12732689. The reversal of 12732657 is 75623721.

It is not a de Polignac number, because 12732657 - 2⁷ = 12732529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12732637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3432 + ... + 6102.

It is an arithmetic number, because the mean of its divisors is an integer number (1218432).

Almost surely, 2^12732657 is an apocalyptic number.

It is an amenable number.

12732657 is a deficient number, since it is larger than the sum of its proper divisors (6762255).

12732657 is a wasteful number, since it uses less digits than its factorization.

12732657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908.

The product of its digits is 17640, while the sum is 33.

The square root of 12732657 is about 3568.2848821247. The cubic root of 12732657 is about 233.5104639133.

The spelling of 12732657 in words is "twelve million, seven hundred thirty-two thousand, six hundred fifty-seven".