12616559 has 2 divisors, whose sum is σ = 12616560. Its totient is φ = 12616558.

The previous prime is 12616553. The next prime is 12616579. The reversal of 12616559 is 95561621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12616559 - 2⁴ = 12616543 is a prime.

It is a super-2 number, since 2×12616559² = 318355122000962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12616553) 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, 6308279 + 6308280.

It is an arithmetic number, because the mean of its divisors is an integer number (6308280).

Almost surely, 2^12616559 is an apocalyptic number.

12616559 is a deficient number, since it is larger than the sum of its proper divisors (1).

12616559 is an equidigital number, since it uses as much as digits as its factorization.

12616559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 12616559 is about 3551.9795889053. The cubic root of 12616559 is about 232.7985696723.

The spelling of 12616559 in words is "twelve million, six hundred sixteen thousand, five hundred fifty-nine".