12612917 has 2 divisors, whose sum is σ = 12612918. Its totient is φ = 12612916.

The previous prime is 12612913. The next prime is 12612923. The reversal of 12612917 is 71921621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10329796 + 2283121 = 3214^2 + 1511^2 .

It is a cyclic number.

It is not a de Polignac number, because 12612917 - 2² = 12612913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12612917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12612913) 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, 6306458 + 6306459.

It is an arithmetic number, because the mean of its divisors is an integer number (6306459).

Almost surely, 2^12612917 is an apocalyptic number.

It is an amenable number.

12612917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12612917 is an equidigital number, since it uses as much as digits as its factorization.

12612917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 12612917 is about 3551.4668800370. The cubic root of 12612917 is about 232.7761669980.

The spelling of 12612917 in words is "twelve million, six hundred twelve thousand, nine hundred seventeen".