12766646 has 8 divisors (see below), whose sum is σ = 19246800. Its totient is φ = 6351048.

The previous prime is 12766639. The next prime is 12766667. The reversal of 12766646 is 64666721.

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, 15641 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (2405850).

Almost surely, 2^12766646 is an apocalyptic number.

12766646 is a deficient number, since it is larger than the sum of its proper divisors (6480154).

12766646 is a wasteful number, since it uses less digits than its factorization.

12766646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32278.

The product of its digits is 72576, while the sum is 38.

The square root of 12766646 is about 3573.0443602060. The cubic root of 12766646 is about 233.7180596353.

The spelling of 12766646 in words is "twelve million, seven hundred sixty-six thousand, six hundred forty-six".