12696644 has 12 divisors (see below), whose sum is σ = 23185344. Its totient is φ = 6072264.

The previous prime is 12696641. The next prime is 12696659. The reversal of 12696644 is 44669621.

It is a happy number.

It is a super-2 number, since 2×12696644² = 322409537725472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12696598 and 12696607.

It is not an unprimeable number, because it can be changed into a prime (12696641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68912 + ... + 69095.

It is an arithmetic number, because the mean of its divisors is an integer number (1932112).

Almost surely, 2^12696644 is an apocalyptic number.

It is an amenable number.

12696644 is a deficient number, since it is larger than the sum of its proper divisors (10488700).

12696644 is a wasteful number, since it uses less digits than its factorization.

12696644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138034 (or 138032 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 12696644 is about 3563.2350469763. The cubic root of 12696644 is about 233.2901026486.

The spelling of 12696644 in words is "twelve million, six hundred ninety-six thousand, six hundred forty-four".