12817867 has 2 divisors, whose sum is σ = 12817868. Its totient is φ = 12817866.

The previous prime is 12817859. The next prime is 12817897. The reversal of 12817867 is 76871821.

12817867 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12817867 - 2³ = 12817859 is a prime.

It is not a weakly prime, because it can be changed into another prime (12817807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408933 + 6408934.

It is an arithmetic number, because the mean of its divisors is an integer number (6408934).

Almost surely, 2^12817867 is an apocalyptic number.

12817867 is a deficient number, since it is larger than the sum of its proper divisors (1).

12817867 is an equidigital number, since it uses as much as digits as its factorization.

12817867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 40.

The square root of 12817867 is about 3580.2048824055. The cubic root of 12817867 is about 234.0302089229.

The spelling of 12817867 in words is "twelve million, eight hundred seventeen thousand, eight hundred sixty-seven".