12957637 has 8 divisors (see below), whose sum is σ = 16155072. Its totient is φ = 10096800.

The previous prime is 12957619. The next prime is 12957649. The reversal of 12957637 is 73675921.

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

It is not a de Polignac number, because 12957637 - 2⁷ = 12957509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12957637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12957667) 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, 84064 + ... + 84217.

It is an arithmetic number, because the mean of its divisors is an integer number (2019384).

Almost surely, 2^12957637 is an apocalyptic number.

It is an amenable number.

12957637 is a deficient number, since it is larger than the sum of its proper divisors (3197435).

12957637 is a wasteful number, since it uses less digits than its factorization.

12957637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168299.

The product of its digits is 79380, while the sum is 40.

The square root of 12957637 is about 3599.6717905942. The cubic root of 12957637 is about 234.8777816267.

The spelling of 12957637 in words is "twelve million, nine hundred fifty-seven thousand, six hundred thirty-seven".