12616579 has 2 divisors, whose sum is σ = 12616580. Its totient is φ = 12616578.

The previous prime is 12616559. The next prime is 12616609. The reversal of 12616579 is 97561621.

It is a weak prime.

It is an emirp because it is prime and its reverse (97561621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12616579 - 2⁵ = 12616547 is a prime.

It is not a weakly prime, because it can be changed into another prime (12616529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308289 + 6308290.

It is an arithmetic number, because the mean of its divisors is an integer number (6308290).

Almost surely, 2^12616579 is an apocalyptic number.

12616579 is a deficient number, since it is larger than the sum of its proper divisors (1).

12616579 is an equidigital number, since it uses as much as digits as its factorization.

12616579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 12616579 is about 3551.9824042357. The cubic root of 12616579 is about 232.7986926844.

It can be divided in two parts, 1261657 and 9, that added together give a triangular number (1261666 = T₁₅₈₈).

The spelling of 12616579 in words is "twelve million, six hundred sixteen thousand, five hundred seventy-nine".