13680322 has 4 divisors (see below), whose sum is σ = 20520486. Its totient is φ = 6840160.

The previous prime is 13680311. The next prime is 13680341. The reversal of 13680322 is 22308631.

13680322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7070281 + 6610041 = 2659^2 + 2571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3420079 + ... + 3420082.

Almost surely, 2^13680322 is an apocalyptic number.

13680322 is a deficient number, since it is larger than the sum of its proper divisors (6840164).

13680322 is an equidigital number, since it uses as much as digits as its factorization.

13680322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840163.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13680322 is about 3698.6919309399. The cubic root of 13680322 is about 239.1656327511.

Adding to 13680322 its reverse (22308631), we get a palindrome (35988953).

The spelling of 13680322 in words is "thirteen million, six hundred eighty thousand, three hundred twenty-two".