12180566 has 16 divisors (see below), whose sum is σ = 18763488. Its totient is φ = 5928000.

The previous prime is 12180563. The next prime is 12180569. The reversal of 12180566 is 66508121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12180563) and next prime (12180569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12180563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15626 + ... + 16386.

It is an arithmetic number, because the mean of its divisors is an integer number (1172718).

Almost surely, 2^12180566 is an apocalyptic number.

12180566 is a deficient number, since it is larger than the sum of its proper divisors (6582922).

12180566 is a wasteful number, since it uses less digits than its factorization.

12180566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12180566 is about 3490.0667615391. The cubic root of 12180566 is about 230.0854502909.

Adding to 12180566 its reverse (66508121), we get a palindrome (78688687).

The spelling of 12180566 in words is "twelve million, one hundred eighty thousand, five hundred sixty-six".