13680733 has 16 divisors (see below), whose sum is σ = 15940800. Its totient is φ = 11603200.

The previous prime is 13680707. The next prime is 13680739. The reversal of 13680733 is 33708631.

It is a cyclic number.

It is not a de Polignac number, because 13680733 - 2⁵ = 13680701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13680695 and 13680704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13680739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27618 + ... + 28108.

It is an arithmetic number, because the mean of its divisors is an integer number (996300).

Almost surely, 2^13680733 is an apocalyptic number.

It is an amenable number.

13680733 is a deficient number, since it is larger than the sum of its proper divisors (2260067).

13680733 is a wasteful number, since it uses less digits than its factorization.

13680733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 13680733 is about 3698.7474907055. The cubic root of 13680733 is about 239.1680278237.

The spelling of 13680733 in words is "thirteen million, six hundred eighty thousand, seven hundred thirty-three".