12646646 has 8 divisors (see below), whose sum is σ = 19080144. Its totient is φ = 6286600.

The previous prime is 12646597. The next prime is 12646661. The reversal of 12646646 is 64664621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17930 + ... + 18621.

It is an arithmetic number, because the mean of its divisors is an integer number (2385018).

Almost surely, 2^12646646 is an apocalyptic number.

12646646 is a deficient number, since it is larger than the sum of its proper divisors (6433498).

12646646 is a wasteful number, since it uses less digits than its factorization.

12646646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36726.

The product of its digits is 41472, while the sum is 35.

The square root of 12646646 is about 3556.2123108723. The cubic root of 12646646 is about 232.9834761440.

The spelling of 12646646 in words is "twelve million, six hundred forty-six thousand, six hundred forty-six".