12056566 has 4 divisors (see below), whose sum is σ = 18084852. Its totient is φ = 6028282.

The previous prime is 12056557. The next prime is 12056567. The reversal of 12056566 is 66565021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66565021 = 107 ⋅622103.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12056567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3014140 + ... + 3014143.

It is an arithmetic number, because the mean of its divisors is an integer number (4521213).

Almost surely, 2^12056566 is an apocalyptic number.

12056566 is a deficient number, since it is larger than the sum of its proper divisors (6028286).

12056566 is an equidigital number, since it uses as much as digits as its factorization.

12056566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6028285.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 12056566 is about 3472.2566149408. The cubic root of 12056566 is about 229.3020175564.

The spelling of 12056566 in words is "twelve million, fifty-six thousand, five hundred sixty-six".