12856069 has 2 divisors, whose sum is σ = 12856070. Its totient is φ = 12856068.

The previous prime is 12856037. The next prime is 12856073. The reversal of 12856069 is 96065821.

12856069 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12852225 + 3844 = 3585^2 + 62^2 .

It is an emirp because it is prime and its reverse (96065821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12856069 - 2⁵ = 12856037 is a prime.

It is a super-2 number, since 2×12856069² = 330557020265522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12856009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428034 + 6428035.

It is an arithmetic number, because the mean of its divisors is an integer number (6428035).

Almost surely, 2^12856069 is an apocalyptic number.

It is an amenable number.

12856069 is a deficient number, since it is larger than the sum of its proper divisors (1).

12856069 is an equidigital number, since it uses as much as digits as its factorization.

12856069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 12856069 is about 3585.5360826521. The cubic root of 12856069 is about 234.2624772816.

The spelling of 12856069 in words is "twelve million, eight hundred fifty-six thousand, sixty-nine".