12668249 has 4 divisors (see below), whose sum is σ = 13819920. Its totient is φ = 11516580.

The previous prime is 12668237. The next prime is 12668261. The reversal of 12668249 is 94286621.

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 an interprime number because it is at equal distance from previous prime (12668237) and next prime (12668261).

It is a cyclic number.

It is not a de Polignac number, because 12668249 - 2¹² = 12664153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12668209) 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, 575819 + ... + 575840.

It is an arithmetic number, because the mean of its divisors is an integer number (3454980).

Almost surely, 2^12668249 is an apocalyptic number.

It is an amenable number.

12668249 is a deficient number, since it is larger than the sum of its proper divisors (1151671).

12668249 is a wasteful number, since it uses less digits than its factorization.

12668249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151670.

The product of its digits is 41472, while the sum is 38.

The square root of 12668249 is about 3559.2483757108. The cubic root of 12668249 is about 233.1160614656.

The spelling of 12668249 in words is "twelve million, six hundred sixty-eight thousand, two hundred forty-nine".