12661180 has 24 divisors (see below), whose sum is σ = 30387168. Its totient is φ = 4340928.

The previous prime is 12661177. The next prime is 12661183. The reversal of 12661180 is 8116621.

It is an interprime number because it is at equal distance from previous prime (12661177) and next prime (12661183).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661183) 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 7 ways as a sum of consecutive naturals, for example, 45079 + ... + 45358.

It is an arithmetic number, because the mean of its divisors is an integer number (1266132).

Almost surely, 2^12661180 is an apocalyptic number.

12661180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12661180 is an abundant number, since it is smaller than the sum of its proper divisors (17725988).

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

12661180 is a wasteful number, since it uses less digits than its factorization.

12661180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90453 (or 90451 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12661180 is about 3558.2551903988. The cubic root of 12661180 is about 233.0726930925.

The spelling of 12661180 in words is "twelve million, six hundred sixty-one thousand, one hundred eighty".