12768857 has 2 divisors, whose sum is σ = 12768858. Its totient is φ = 12768856.

The previous prime is 12768851. The next prime is 12768881. The reversal of 12768857 is 75886721.

12768857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10394176 + 2374681 = 3224^2 + 1541^2 .

It is an emirp because it is prime and its reverse (75886721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12768857 - 2¹² = 12764761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12768851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6384428 + 6384429.

It is an arithmetic number, because the mean of its divisors is an integer number (6384429).

Almost surely, 2^12768857 is an apocalyptic number.

It is an amenable number.

12768857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12768857 is an equidigital number, since it uses as much as digits as its factorization.

12768857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 44.

The square root of 12768857 is about 3573.3537468322. The cubic root of 12768857 is about 233.7315510619.

The spelling of 12768857 in words is "twelve million, seven hundred sixty-eight thousand, eight hundred fifty-seven".