12668577 has 4 divisors (see below), whose sum is σ = 16891440. Its totient is φ = 8445716.

The previous prime is 12668569. The next prime is 12668603. The reversal of 12668577 is 77586621.

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 12668577 - 2³ = 12668569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12668507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111427 + ... + 2111432.

It is an arithmetic number, because the mean of its divisors is an integer number (4222860).

Almost surely, 2^12668577 is an apocalyptic number.

It is an amenable number.

12668577 is a deficient number, since it is larger than the sum of its proper divisors (4222863).

12668577 is an equidigital number, since it uses as much as digits as its factorization.

12668577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222862.

The product of its digits is 141120, while the sum is 42.

The square root of 12668577 is about 3559.2944525566. The cubic root of 12668577 is about 233.1180733566.

The spelling of 12668577 in words is "twelve million, six hundred sixty-eight thousand, five hundred seventy-seven".