13660780 has 24 divisors (see below), whose sum is σ = 32786208. Its totient is φ = 4683648.

The previous prime is 13660771. The next prime is 13660783. The reversal of 13660780 is 8706631.

It is not an unprimeable number, because it can be changed into a prime (13660783) 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, 48649 + ... + 48928.

It is an arithmetic number, because the mean of its divisors is an integer number (1366092).

Almost surely, 2^13660780 is an apocalyptic number.

13660780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13660780 is an abundant number, since it is smaller than the sum of its proper divisors (19125428).

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

13660780 is a wasteful number, since it uses less digits than its factorization.

13660780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97593 (or 97591 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 13660780 is about 3696.0492420962. The cubic root of 13660780 is about 239.0516977619.

The spelling of 13660780 in words is "thirteen million, six hundred sixty thousand, seven hundred eighty".