13718997 has 16 divisors (see below), whose sum is σ = 20710080. Its totient is φ = 8972496.

The previous prime is 13718989. The next prime is 13719029. The reversal of 13718997 is 79981731.

It is not a de Polignac number, because 13718997 - 2³ = 13718989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13718927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3363 + ... + 6224.

It is an arithmetic number, because the mean of its divisors is an integer number (1294380).

Almost surely, 2^13718997 is an apocalyptic number.

It is an amenable number.

13718997 is a deficient number, since it is larger than the sum of its proper divisors (6991083).

13718997 is an equidigital number, since it uses as much as digits as its factorization.

13718997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649 (or 9643 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 13718997 is about 3703.9164407422. The cubic root of 13718997 is about 239.3907986991.

The spelling of 13718997 in words is "thirteen million, seven hundred eighteen thousand, nine hundred ninety-seven".