12662556 has 24 divisors (see below), whose sum is σ = 29623440. Its totient is φ = 4209792.

The previous prime is 12662549. The next prime is 12662567. The reversal of 12662556 is 65526621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 4330 + ... + 6638.

It is an arithmetic number, because the mean of its divisors is an integer number (1234310).

Almost surely, 2^12662556 is an apocalyptic number.

It is an amenable number.

12662556 is an abundant number, since it is smaller than the sum of its proper divisors (16960884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12662556 is a wasteful number, since it uses less digits than its factorization.

12662556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773 (or 2771 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 12662556 is about 3558.4485383380. The cubic root of 12662556 is about 233.0811361289.

The spelling of 12662556 in words is "twelve million, six hundred sixty-two thousand, five hundred fifty-six".