12689711 has 2 divisors, whose sum is σ = 12689712. Its totient is φ = 12689710.

The previous prime is 12689693. The next prime is 12689731. The reversal of 12689711 is 11798621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12689711 - 2²² = 8495407 is a prime.

It is a super-2 number, since 2×12689711² = 322057530527042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12689731) 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, 6344855 + 6344856.

It is an arithmetic number, because the mean of its divisors is an integer number (6344856).

Almost surely, 2^12689711 is an apocalyptic number.

12689711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689711 is an equidigital number, since it uses as much as digits as its factorization.

12689711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 35.

The square root of 12689711 is about 3562.2620622296. The cubic root of 12689711 is about 233.2476322455.

The spelling of 12689711 in words is "twelve million, six hundred eighty-nine thousand, seven hundred eleven".