12856667 has 2 divisors, whose sum is σ = 12856668. Its totient is φ = 12856666.

The previous prime is 12856651. The next prime is 12856681. The reversal of 12856667 is 76665821.

12856667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12856667 - 2⁴ = 12856651 is a prime.

It is not a weakly prime, because it can be changed into another prime (12856567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428333 + 6428334.

It is an arithmetic number, because the mean of its divisors is an integer number (6428334).

Almost surely, 2^12856667 is an apocalyptic number.

12856667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12856667 is an equidigital number, since it uses as much as digits as its factorization.

12856667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 12856667 is about 3585.6194722809. The cubic root of 12856667 is about 234.2661094647.

The spelling of 12856667 in words is "twelve million, eight hundred fifty-six thousand, six hundred sixty-seven".