12568891 has 2 divisors, whose sum is σ = 12568892. Its totient is φ = 12568890.

The previous prime is 12568883. The next prime is 12568901. The reversal of 12568891 is 19886521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12568891 - 2³ = 12568883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12568811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284445 + 6284446.

It is an arithmetic number, because the mean of its divisors is an integer number (6284446).

Almost surely, 2^12568891 is an apocalyptic number.

12568891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12568891 is an equidigital number, since it uses as much as digits as its factorization.

12568891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 40.

The square root of 12568891 is about 3545.2631778191. The cubic root of 12568891 is about 232.5050124175.

The spelling of 12568891 in words is "twelve million, five hundred sixty-eight thousand, eight hundred ninety-one".