13568857 has 2 divisors, whose sum is σ = 13568858. Its totient is φ = 13568856.

The previous prime is 13568843. The next prime is 13568861. The reversal of 13568857 is 75886531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 866761 = 3564^2 + 931^2 .

It is a cyclic number.

It is not a de Polignac number, because 13568857 - 2¹⁹ = 13044569 is a prime.

It is a super-2 number, since 2×13568857² = 368227760572898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13568837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6784428 + 6784429.

It is an arithmetic number, because the mean of its divisors is an integer number (6784429).

Almost surely, 2^13568857 is an apocalyptic number.

It is an amenable number.

13568857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13568857 is an equidigital number, since it uses as much as digits as its factorization.

13568857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 43.

The square root of 13568857 is about 3683.5929471102. The cubic root of 13568857 is about 238.5142998837.

The spelling of 13568857 in words is "thirteen million, five hundred sixty-eight thousand, eight hundred fifty-seven".