12623666 has 16 divisors (see below), whose sum is σ = 20714400. Its totient is φ = 5722080.

The previous prime is 12623659. The next prime is 12623669. The reversal of 12623666 is 66632621.

It is not an unprimeable number, because it can be changed into a prime (12623669) 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 7 ways as a sum of consecutive naturals, for example, 11510 + ... + 12558.

It is an arithmetic number, because the mean of its divisors is an integer number (1294650).

Almost surely, 2^12623666 is an apocalyptic number.

12623666 is a deficient number, since it is larger than the sum of its proper divisors (8090734).

12623666 is a wasteful number, since it uses less digits than its factorization.

12623666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609.

The product of its digits is 15552, while the sum is 32.

The square root of 12623666 is about 3552.9798761040. The cubic root of 12623666 is about 232.8422738463.

The spelling of 12623666 in words is "twelve million, six hundred twenty-three thousand, six hundred sixty-six".