12668780 has 24 divisors (see below), whose sum is σ = 26671680. Its totient is φ = 5054720.

The previous prime is 12668779. The next prime is 12668783. The reversal of 12668780 is 8786621.

12668780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668783) 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, 13940 + ... + 14820.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320).

Almost surely, 2^12668780 is an apocalyptic number.

12668780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12668780 is an abundant number, since it is smaller than the sum of its proper divisors (14002900).

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

12668780 is a wasteful number, since it uses less digits than its factorization.

12668780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 12668780 is about 3559.3229693300. The cubic root of 12668780 is about 233.1193185035.

The spelling of 12668780 in words is "twelve million, six hundred sixty-eight thousand, seven hundred eighty".