12668613 has 4 divisors (see below), whose sum is σ = 16891488. Its totient is φ = 8445740.

The previous prime is 12668609. The next prime is 12668627. The reversal of 12668613 is 31686621.

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 12668613 - 2² = 12668609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111433 + ... + 2111438.

It is an arithmetic number, because the mean of its divisors is an integer number (4222872).

Almost surely, 2^12668613 is an apocalyptic number.

It is an amenable number.

12668613 is a deficient number, since it is larger than the sum of its proper divisors (4222875).

12668613 is an equidigital number, since it uses as much as digits as its factorization.

12668613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222874.

The product of its digits is 10368, while the sum is 33.

The square root of 12668613 is about 3559.2995097350. The cubic root of 12668613 is about 233.1182941718.

The spelling of 12668613 in words is "twelve million, six hundred sixty-eight thousand, six hundred thirteen".