12660018 has 16 divisors (see below), whose sum is σ = 28937280. Its totient is φ = 3617136.

The previous prime is 12660013. The next prime is 12660091. The reversal of 12660018 is 81006621.

It is a self number, because there is not a number n which added to its sum of digits gives 12660018.

It is not an unprimeable number, because it can be changed into a prime (12660013) 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, 150673 + ... + 150756.

It is an arithmetic number, because the mean of its divisors is an integer number (1808580).

Almost surely, 2^12660018 is an apocalyptic number.

12660018 is an abundant number, since it is smaller than the sum of its proper divisors (16277262).

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

12660018 is a wasteful number, since it uses less digits than its factorization.

12660018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301441.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 12660018 is about 3558.0919043780. The cubic root of 12660018 is about 233.0655626683.

Adding to 12660018 its reverse (81006621), we get a palindrome (93666639).

The spelling of 12660018 in words is "twelve million, six hundred sixty thousand, eighteen".