12945613 has 2 divisors, whose sum is σ = 12945614. Its totient is φ = 12945612.

The previous prime is 12945607. The next prime is 12945617. The reversal of 12945613 is 31654921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12945604 + 9 = 3598^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 12945613 - 2¹⁷ = 12814541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12945617) 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, 6472806 + 6472807.

It is an arithmetic number, because the mean of its divisors is an integer number (6472807).

Almost surely, 2^12945613 is an apocalyptic number.

It is an amenable number.

12945613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12945613 is an equidigital number, since it uses as much as digits as its factorization.

12945613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 12945613 is about 3598.0012506946. The cubic root of 12945613 is about 234.8051077676.

The spelling of 12945613 in words is "twelve million, nine hundred forty-five thousand, six hundred thirteen".