12657115 has 4 divisors (see below), whose sum is σ = 15188544. Its totient is φ = 10125688.

The previous prime is 12657091. The next prime is 12657119. The reversal of 12657115 is 51175621.

12657115 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12657115 - 2²³ = 4268507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12657119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265707 + ... + 1265716.

It is an arithmetic number, because the mean of its divisors is an integer number (3797136).

Almost surely, 2^12657115 is an apocalyptic number.

12657115 is a deficient number, since it is larger than the sum of its proper divisors (2531429).

12657115 is an equidigital number, since it uses as much as digits as its factorization.

12657115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531428.

The product of its digits is 2100, while the sum is 28.

The square root of 12657115 is about 3557.6839376201. The cubic root of 12657115 is about 233.0477469735.

The spelling of 12657115 in words is "twelve million, six hundred fifty-seven thousand, one hundred fifteen".