13868857 has 2 divisors, whose sum is σ = 13868858. Its totient is φ = 13868856.

The previous prime is 13868851. The next prime is 13868861. The reversal of 13868857 is 75886831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9357481 + 4511376 = 3059^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 13868857 - 2²³ = 5480249 is a prime.

It is not a weakly prime, because it can be changed into another prime (13868851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934428 + 6934429.

It is an arithmetic number, because the mean of its divisors is an integer number (6934429).

Almost surely, 2^13868857 is an apocalyptic number.

It is an amenable number.

13868857 is a deficient number, since it is larger than the sum of its proper divisors (1).

13868857 is an equidigital number, since it uses as much as digits as its factorization.

13868857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 13868857 is about 3724.0914328196. The cubic root of 13868857 is about 240.2593088483.

The spelling of 13868857 in words is "thirteen million, eight hundred sixty-eight thousand, eight hundred fifty-seven".