12696517 has 2 divisors, whose sum is σ = 12696518. Its totient is φ = 12696516.

The previous prime is 12696493. The next prime is 12696527. The reversal of 12696517 is 71569621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 1366561 = 3366^2 + 1169^2 .

It is a cyclic number.

It is not a de Polignac number, because 12696517 - 2²³ = 4307909 is a prime.

It is a super-2 number, since 2×12696517² = 322403087862578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12696527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6348258 + 6348259.

It is an arithmetic number, because the mean of its divisors is an integer number (6348259).

Almost surely, 2^12696517 is an apocalyptic number.

It is an amenable number.

12696517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12696517 is an equidigital number, since it uses as much as digits as its factorization.

12696517 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12696517 is about 3563.2172260473. The cubic root of 12696517 is about 233.2893248067.

The spelling of 12696517 in words is "twelve million, six hundred ninety-six thousand, five hundred seventeen".