12118564 has 18 divisors (see below), whose sum is σ = 21546182. Its totient is φ = 5964000.

The previous prime is 12118553. The next prime is 12118567. The reversal of 12118564 is 46581121.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 504100 = 3408^2 + 710^2 .

It is not an unprimeable number, because it can be changed into a prime (12118567) 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 5 ways as a sum of consecutive naturals, for example, 19864 + ... + 20464.

Almost surely, 2^12118564 is an apocalyptic number.

It is an amenable number.

12118564 is a deficient number, since it is larger than the sum of its proper divisors (9427618).

12118564 is an equidigital number, since it uses as much as digits as its factorization.

12118564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 674 counting only the distinct ones).

The product of its digits is 1920, while the sum is 28.

The square root of 12118564 is about 3481.1727908853. The cubic root of 12118564 is about 229.6943893132.

Adding to 12118564 its reverse (46581121), we get a palindrome (58699685).

The spelling of 12118564 in words is "twelve million, one hundred eighteen thousand, five hundred sixty-four".