12696491 has 2 divisors, whose sum is σ = 12696492. Its totient is φ = 12696490.

The previous prime is 12696487. The next prime is 12696493. The reversal of 12696491 is 19469621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12696491 - 2² = 12696487 is a prime.

It is a super-2 number, since 2×12696491² = 322401767426162, which contains 22 as substring.

Together with 12696493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12696493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6348245 + 6348246.

It is an arithmetic number, because the mean of its divisors is an integer number (6348246).

Almost surely, 2^12696491 is an apocalyptic number.

12696491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12696491 is an equidigital number, since it uses as much as digits as its factorization.

12696491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 12696491 is about 3563.2135776571. The cubic root of 12696491 is about 233.2891655629.

The spelling of 12696491 in words is "twelve million, six hundred ninety-six thousand, four hundred ninety-one".