13682857 has 2 divisors, whose sum is σ = 13682858. Its totient is φ = 13682856.

The previous prime is 13682843. The next prime is 13682863. The reversal of 13682857 is 75828631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13682601 + 256 = 3699^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 13682857 - 2¹¹ = 13680809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13682827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6841428 + 6841429.

It is an arithmetic number, because the mean of its divisors is an integer number (6841429).

Almost surely, 2^13682857 is an apocalyptic number.

It is an amenable number.

13682857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13682857 is an equidigital number, since it uses as much as digits as its factorization.

13682857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 13682857 is about 3699.0346037852. The cubic root of 13682857 is about 239.1804045144.

It can be divided in two parts, 1368 and 2857, that added together give a square (4225 = 65²).

The spelling of 13682857 in words is "thirteen million, six hundred eighty-two thousand, eight hundred fifty-seven".