12617879 has 2 divisors, whose sum is σ = 12617880. Its totient is φ = 12617878.

The previous prime is 12617867. The next prime is 12617887. The reversal of 12617879 is 97871621.

It is a strong prime.

It is an emirp because it is prime and its reverse (97871621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12617879 - 2⁴ = 12617863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12617819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308939 + 6308940.

It is an arithmetic number, because the mean of its divisors is an integer number (6308940).

Almost surely, 2^12617879 is an apocalyptic number.

12617879 is a deficient number, since it is larger than the sum of its proper divisors (1).

12617879 is an equidigital number, since it uses as much as digits as its factorization.

12617879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 41.

The square root of 12617879 is about 3552.1653959240. The cubic root of 12617879 is about 232.8066881933.

The spelling of 12617879 in words is "twelve million, six hundred seventeen thousand, eight hundred seventy-nine".