12634945 has 16 divisors (see below), whose sum is σ = 15704640. Its totient is φ = 9751104.

The previous prime is 12634933. The next prime is 12634967. The reversal of 12634945 is 54943621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12634945 - 2¹¹ = 12632897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12634945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29946 + ... + 30364.

It is an arithmetic number, because the mean of its divisors is an integer number (981540).

Almost surely, 2^12634945 is an apocalyptic number.

It is an amenable number.

12634945 is a deficient number, since it is larger than the sum of its proper divisors (3069695).

12634945 is a wasteful number, since it uses less digits than its factorization.

12634945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624.

The product of its digits is 25920, while the sum is 34.

The square root of 12634945 is about 3554.5667809172. The cubic root of 12634945 is about 232.9115998839.

The spelling of 12634945 in words is "twelve million, six hundred thirty-four thousand, nine hundred forty-five".