12662566 has 16 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 5349960.

The previous prime is 12662549. The next prime is 12662567. The reversal of 12662566 is 66526621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662567) 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, 5376 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^12662566 is an apocalyptic number.

12662566 is a deficient number, since it is larger than the sum of its proper divisors (9352154).

12662566 is a wasteful number, since it uses less digits than its factorization.

12662566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819.

The product of its digits is 25920, while the sum is 34.

The square root of 12662566 is about 3558.4499434445. The cubic root of 12662566 is about 233.0811974859.

The spelling of 12662566 in words is "twelve million, six hundred sixty-two thousand, five hundred sixty-six".