12664635 has 8 divisors (see below), whose sum is σ = 20263440. Its totient is φ = 6754464.

The previous prime is 12664607. The next prime is 12664669. The reversal of 12664635 is 53646621.

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

It is not a de Polignac number, because 12664635 - 2¹³ = 12656443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12664596 and 12664605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422140 + ... + 422169.

It is an arithmetic number, because the mean of its divisors is an integer number (2532930).

Almost surely, 2^12664635 is an apocalyptic number.

12664635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12664635 is a deficient number, since it is larger than the sum of its proper divisors (7598805).

12664635 is an equidigital number, since it uses as much as digits as its factorization.

12664635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844317.

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

The square root of 12664635 is about 3558.7406480383. The cubic root of 12664635 is about 233.0938915621.

The spelling of 12664635 in words is "twelve million, six hundred sixty-four thousand, six hundred thirty-five".