12866680 has 32 divisors (see below), whose sum is σ = 29388240. Its totient is φ = 5068800.

The previous prime is 12866647. The next prime is 12866681. The reversal of 12866680 is 8666821.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866681) 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, 280 + ... + 5080.

Almost surely, 2^12866680 is an apocalyptic number.

12866680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12866680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14694120).

12866680 is an abundant number, since it is smaller than the sum of its proper divisors (16521560).

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

12866680 is a wasteful number, since it uses less digits than its factorization.

12866680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4879 (or 4875 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 12866680 is about 3587.0154725064. The cubic root of 12866680 is about 234.3269105484.

The spelling of 12866680 in words is "twelve million, eight hundred sixty-six thousand, six hundred eighty".