12936857 has 2 divisors, whose sum is σ = 12936858. Its totient is φ = 12936856.

The previous prime is 12936817. The next prime is 12936877. The reversal of 12936857 is 75863921.

12936857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9853321 + 3083536 = 3139^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 12936857 - 2¹⁰ = 12935833 is a prime.

It is not a weakly prime, because it can be changed into another prime (12936817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6468428 + 6468429.

It is an arithmetic number, because the mean of its divisors is an integer number (6468429).

Almost surely, 2^12936857 is an apocalyptic number.

It is an amenable number.

12936857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12936857 is an equidigital number, since it uses as much as digits as its factorization.

12936857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 12936857 is about 3596.7842581951. The cubic root of 12936857 is about 234.7521575977.

The spelling of 12936857 in words is "twelve million, nine hundred thirty-six thousand, eight hundred fifty-seven".