12689696 has 24 divisors (see below), whose sum is σ = 25063164. Its totient is φ = 6324480.

The previous prime is 12689693. The next prime is 12689711. The reversal of 12689696 is 69698621.

It can be written as a sum of positive squares in 2 ways, for example, as 11806096 + 883600 = 3436^2 + 940^2 .

It is a super-2 number, since 2×12689696² = 322056769144832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12689696.

It is not an unprimeable number, because it can be changed into a prime (12689693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16946 + ... + 17678.

Almost surely, 2^12689696 is an apocalyptic number.

12689696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12689696 is a deficient number, since it is larger than the sum of its proper divisors (12373468).

12689696 is an equidigital number, since it uses as much as digits as its factorization.

12689696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1276 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 12689696 is about 3562.2599568252. The cubic root of 12689696 is about 233.2475403412.

The spelling of 12689696 in words is "twelve million, six hundred eighty-nine thousand, six hundred ninety-six".