12644579 has 2 divisors, whose sum is σ = 12644580. Its totient is φ = 12644578.

The previous prime is 12644563. The next prime is 12644591. The reversal of 12644579 is 97544621.

It is a strong prime.

It is an emirp because it is prime and its reverse (97544621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12644579 - 2⁴ = 12644563 is a prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (12634579) 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, 6322289 + 6322290.

It is an arithmetic number, because the mean of its divisors is an integer number (6322290).

Almost surely, 2^12644579 is an apocalyptic number.

12644579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12644579 is an equidigital number, since it uses as much as digits as its factorization.

12644579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 12644579 is about 3555.9216808023. The cubic root of 12644579 is about 232.9707823151.

The spelling of 12644579 in words is "twelve million, six hundred forty-four thousand, five hundred seventy-nine".