13997716 has 6 divisors (see below), whose sum is σ = 24496010. Its totient is φ = 6998856.

The previous prime is 13997713. The next prime is 13997719. The reversal of 13997716 is 61779931.

13997716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13997713) and next prime (13997719).

It can be written as a sum of positive squares in only one way, i.e., 11532816 + 2464900 = 3396^2 + 1570^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13997713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1749711 + ... + 1749718.

Almost surely, 2^13997716 is an apocalyptic number.

It is an amenable number.

13997716 is a deficient number, since it is larger than the sum of its proper divisors (10498294).

13997716 is a wasteful number, since it uses less digits than its factorization.

13997716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499433 (or 3499431 counting only the distinct ones).

The product of its digits is 71442, while the sum is 43.

The square root of 13997716 is about 3741.3521619864. The cubic root of 13997716 is about 241.0011191215.

The spelling of 13997716 in words is "thirteen million, nine hundred ninety-seven thousand, seven hundred sixteen".