13666980 has 48 divisors (see below), whose sum is σ = 40521600. Its totient is φ = 3429888.

The previous prime is 13666979. The next prime is 13666999. The reversal of 13666980 is 8966631.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5680 + ... + 7719.

It is an arithmetic number, because the mean of its divisors is an integer number (844200).

Almost surely, 2^13666980 is an apocalyptic number.

13666980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13666980 is an abundant number, since it is smaller than the sum of its proper divisors (26854620).

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

13666980 is a wasteful number, since it uses less digits than its factorization.

13666980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13428 (or 13426 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 13666980 is about 3696.8878803664. The cubic root of 13666980 is about 239.0878571505.

The spelling of 13666980 in words is "thirteen million, six hundred sixty-six thousand, nine hundred eighty".