12646988 has 12 divisors (see below), whose sum is σ = 22647240. Its totient is φ = 6176352.

The previous prime is 12646981. The next prime is 12647003. The reversal of 12646988 is 88964621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12646981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36593 + ... + 36936.

It is an arithmetic number, because the mean of its divisors is an integer number (1887270).

Almost surely, 2^12646988 is an apocalyptic number.

It is an amenable number.

12646988 is a deficient number, since it is larger than the sum of its proper divisors (10000252).

12646988 is a wasteful number, since it uses less digits than its factorization.

12646988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73576 (or 73574 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 12646988 is about 3556.2603954154. The cubic root of 12646988 is about 232.9855762959.

The spelling of 12646988 in words is "twelve million, six hundred forty-six thousand, nine hundred eighty-eight".