12668357 has 4 divisors (see below), whose sum is σ = 13642860. Its totient is φ = 11693856.

The previous prime is 12668353. The next prime is 12668387. The reversal of 12668357 is 75386621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6145441 + 6522916 = 2479^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 12668357 - 2² = 12668353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12668357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668353) 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, 487232 + ... + 487257.

It is an arithmetic number, because the mean of its divisors is an integer number (3410715).

Almost surely, 2^12668357 is an apocalyptic number.

It is an amenable number.

12668357 is a deficient number, since it is larger than the sum of its proper divisors (974503).

12668357 is an equidigital number, since it uses as much as digits as its factorization.

12668357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974502.

The product of its digits is 60480, while the sum is 38.

The square root of 12668357 is about 3559.2635474210. The cubic root of 12668357 is about 233.1167239214.

The spelling of 12668357 in words is "twelve million, six hundred sixty-eight thousand, three hundred fifty-seven".