12666760 has 32 divisors (see below), whose sum is σ = 28695960. Its totient is φ = 5031936.

The previous prime is 12666727. The next prime is 12666763. The reversal of 12666760 is 6766621.

It can be written as a sum of positive squares in 4 ways, for example, as 10929636 + 1737124 = 3306^2 + 1318^2 .

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12666763) 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, 5272 + ... + 7288.

Almost surely, 2^12666760 is an apocalyptic number.

12666760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12666760 is an abundant number, since it is smaller than the sum of its proper divisors (16029200).

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

12666760 is a wasteful number, since it uses less digits than its factorization.

12666760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 12666760 is about 3559.0391961876. The cubic root of 12666760 is about 233.1069277799.

The spelling of 12666760 in words is "twelve million, six hundred sixty-six thousand, seven hundred sixty".