13681718 has 8 divisors (see below), whose sum is σ = 20552160. Its totient is φ = 6831000.

The previous prime is 13681709. The next prime is 13681721. The reversal of 13681718 is 81718631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3053 + ... + 6056.

It is an arithmetic number, because the mean of its divisors is an integer number (2569020).

Almost surely, 2^13681718 is an apocalyptic number.

13681718 is a deficient number, since it is larger than the sum of its proper divisors (6870442).

13681718 is an equidigital number, since it uses as much as digits as its factorization.

13681718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9862.

The product of its digits is 8064, while the sum is 35.

The square root of 13681718 is about 3698.8806414914. The cubic root of 13681718 is about 239.1737676441.

The spelling of 13681718 in words is "thirteen million, six hundred eighty-one thousand, seven hundred eighteen".