13680808 has 32 divisors (see below), whose sum is σ = 26829000. Its totient is φ = 6531840.

The previous prime is 13680773. The next prime is 13680809. The reversal of 13680808 is 80808631.

It can be written as a sum of positive squares in 4 ways, for example, as 12236004 + 1444804 = 3498^2 + 1202^2 .

It is not an unprimeable number, because it can be changed into a prime (13680809) 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, 25018 + ... + 25558.

Almost surely, 2^13680808 is an apocalyptic number.

It is an amenable number.

13680808 is a deficient number, since it is larger than the sum of its proper divisors (13148192).

13680808 is a wasteful number, since it uses less digits than its factorization.

13680808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 13680808 is about 3698.7576292588. The cubic root of 13680808 is about 239.1684648755.

The spelling of 13680808 in words is "thirteen million, six hundred eighty thousand, eight hundred eight".