12646645 has 8 divisors (see below), whose sum is σ = 16555680. Its totient is φ = 9197520.

The previous prime is 12646597. The next prime is 12646661. The reversal of 12646645 is 54664621.

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

It is not a de Polignac number, because 12646645 - 2¹³ = 12638453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12646645.

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 7 ways as a sum of consecutive naturals, for example, 114915 + ... + 115024.

It is an arithmetic number, because the mean of its divisors is an integer number (2069460).

Almost surely, 2^12646645 is an apocalyptic number.

It is an amenable number.

12646645 is a deficient number, since it is larger than the sum of its proper divisors (3909035).

12646645 is a wasteful number, since it uses less digits than its factorization.

12646645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229955.

The product of its digits is 34560, while the sum is 34.

The square root of 12646645 is about 3556.2121702733. The cubic root of 12646645 is about 232.9834700032.

The spelling of 12646645 in words is "twelve million, six hundred forty-six thousand, six hundred forty-five".