12816667 has 2 divisors, whose sum is σ = 12816668. Its totient is φ = 12816666.

The previous prime is 12816607. The next prime is 12816677. The reversal of 12816667 is 76661821.

It is a strong prime.

It is an emirp because it is prime and its reverse (76661821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12816667 - 2¹⁵ = 12783899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12816607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408333 + 6408334.

It is an arithmetic number, because the mean of its divisors is an integer number (6408334).

Almost surely, 2^12816667 is an apocalyptic number.

12816667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12816667 is an equidigital number, since it uses as much as digits as its factorization.

12816667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 12816667 is about 3580.0372903086. The cubic root of 12816667 is about 234.0229054452.

The spelling of 12816667 in words is "twelve million, eight hundred sixteen thousand, six hundred sixty-seven".