12646635 has 16 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 6716000.

The previous prime is 12646597. The next prime is 12646661. The reversal of 12646635 is 53664621.

It is not a de Polignac number, because 12646635 - 2¹⁴ = 12630251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12646596 and 12646605.

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 15 ways as a sum of consecutive naturals, for example, 2086 + ... + 5444.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^12646635 is an apocalyptic number.

12646635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12646635 is a deficient number, since it is larger than the sum of its proper divisors (7674645).

12646635 is a wasteful number, since it uses less digits than its factorization.

12646635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618.

The product of its digits is 25920, while the sum is 33.

The square root of 12646635 is about 3556.2107642827. The cubic root of 12646635 is about 232.9834085947.

The spelling of 12646635 in words is "twelve million, six hundred forty-six thousand, six hundred thirty-five".