12966651 has 12 divisors (see below), whose sum is σ = 18793528. Its totient is φ = 8614944.

The previous prime is 12966643. The next prime is 12966661. The reversal of 12966651 is 15666921.

It is not a de Polignac number, because 12966651 - 2³ = 12966643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12966601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516 + ... + 5118.

Almost surely, 2^12966651 is an apocalyptic number.

12966651 is a deficient number, since it is larger than the sum of its proper divisors (5826877).

12966651 is a wasteful number, since it uses less digits than its factorization.

12966651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4922 (or 4919 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 12966651 is about 3600.9236315146. The cubic root of 12966651 is about 234.9322333649.

The spelling of 12966651 in words is "twelve million, nine hundred sixty-six thousand, six hundred fifty-one".