13680736 has 12 divisors (see below), whose sum is σ = 26934012. Its totient is φ = 6840352.

The previous prime is 13680707. The next prime is 13680739. The reversal of 13680736 is 63708631.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213730 + ... + 213793.

It is an arithmetic number, because the mean of its divisors is an integer number (2244501).

Almost surely, 2^13680736 is an apocalyptic number.

13680736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13680736 is a deficient number, since it is larger than the sum of its proper divisors (13253276).

13680736 is an equidigital number, since it uses as much as digits as its factorization.

13680736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427533 (or 427525 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 13680736 is about 3698.7478962481. The cubic root of 13680736 is about 239.1680453058.

The spelling of 13680736 in words is "thirteen million, six hundred eighty thousand, seven hundred thirty-six".