12965666 has 16 divisors (see below), whose sum is σ = 22331904. Its totient is φ = 5530464.

The previous prime is 12965633. The next prime is 12965671. The reversal of 12965666 is 66656921.

12965666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1046 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (1395744).

Almost surely, 2^12965666 is an apocalyptic number.

12965666 is a deficient number, since it is larger than the sum of its proper divisors (9366238).

12965666 is a wasteful number, since it uses less digits than its factorization.

12965666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385.

The product of its digits is 116640, while the sum is 41.

The square root of 12965666 is about 3600.7868584519. The cubic root of 12965666 is about 234.9262844089.

It can be divided in two parts, 12965 and 666, that added together give a palindrome (13631).

The spelling of 12965666 in words is "twelve million, nine hundred sixty-five thousand, six hundred sixty-six".