12711657 has 16 divisors (see below), whose sum is σ = 20039040. Its totient is φ = 7012992.

The previous prime is 12711649. The next prime is 12711697. The reversal of 12711657 is 75611721.

12711657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12711657 - 2³ = 12711649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12711697) 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, 9828 + ... + 11045.

It is an arithmetic number, because the mean of its divisors is an integer number (1252440).

Almost surely, 2^12711657 is an apocalyptic number.

It is an amenable number.

12711657 is a deficient number, since it is larger than the sum of its proper divisors (7327383).

12711657 is a wasteful number, since it uses less digits than its factorization.

12711657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20912.

The product of its digits is 2940, while the sum is 30.

The square root of 12711657 is about 3565.3410776530. The cubic root of 12711657 is about 233.3820168259.

The spelling of 12711657 in words is "twelve million, seven hundred eleven thousand, six hundred fifty-seven".