12695911 has 2 divisors, whose sum is σ = 12695912. Its totient is φ = 12695910.

The previous prime is 12695909. The next prime is 12695959. The reversal of 12695911 is 11959621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12695911 - 2¹ = 12695909 is a prime.

It is a super-2 number, since 2×12695911² = 322372312239842, which contains 22 as substring.

Together with 12695909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12695411) 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, 6347955 + 6347956.

It is an arithmetic number, because the mean of its divisors is an integer number (6347956).

Almost surely, 2^12695911 is an apocalyptic number.

12695911 is a deficient number, since it is larger than the sum of its proper divisors (1).

12695911 is an equidigital number, since it uses as much as digits as its factorization.

12695911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 34.

The square root of 12695911 is about 3563.1321895209. The cubic root of 12695911 is about 233.2856131437.

The spelling of 12695911 in words is "twelve million, six hundred ninety-five thousand, nine hundred eleven".