12664653 has 4 divisors (see below), whose sum is σ = 16886208. Its totient is φ = 8443100.

The previous prime is 12664607. The next prime is 12664669. The reversal of 12664653 is 35646621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12664653 - 2¹⁴ = 12648269 is a prime.

It is a super-2 number, since 2×12664653² = 320786871220818, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664153) by changing a digit.

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, 2110773 + ... + 2110778.

It is an arithmetic number, because the mean of its divisors is an integer number (4221552).

Almost surely, 2^12664653 is an apocalyptic number.

It is an amenable number.

12664653 is a deficient number, since it is larger than the sum of its proper divisors (4221555).

12664653 is an equidigital number, since it uses as much as digits as its factorization.

12664653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221554.

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

The square root of 12664653 is about 3558.7431770219. The cubic root of 12664653 is about 233.0940019927.

The spelling of 12664653 in words is "twelve million, six hundred sixty-four thousand, six hundred fifty-three".