12668961 has 32 divisors (see below), whose sum is σ = 18817920. Its totient is φ = 7547904.

The previous prime is 12668951. The next prime is 12668977. The reversal of 12668961 is 16986621.

It is not a de Polignac number, because 12668961 - 2⁹ = 12668449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12668921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116175 + ... + 116283.

It is an arithmetic number, because the mean of its divisors is an integer number (588060).

Almost surely, 2^12668961 is an apocalyptic number.

It is an amenable number.

12668961 is a deficient number, since it is larger than the sum of its proper divisors (6148959).

12668961 is a wasteful number, since it uses less digits than its factorization.

12668961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225.

The product of its digits is 31104, while the sum is 39.

The square root of 12668961 is about 3559.3483954230. The cubic root of 12668961 is about 233.1204286971.

The spelling of 12668961 in words is "twelve million, six hundred sixty-eight thousand, nine hundred sixty-one".