13197717 has 18 divisors (see below), whose sum is σ = 20644962. Its totient is φ = 8120736.

The previous prime is 13197707. The next prime is 13197719. The reversal of 13197717 is 71779131.

It can be written as a sum of positive squares in 3 ways, for example, as 194481 + 13003236 = 441^2 + 3606^2 .

It is not a de Polignac number, because 13197717 - 2⁸ = 13197461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13197719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2818 + ... + 5859.

Almost surely, 2^13197717 is an apocalyptic number.

It is an amenable number.

13197717 is a deficient number, since it is larger than the sum of its proper divisors (7447245).

13197717 is a wasteful number, since it uses less digits than its factorization.

13197717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8709 (or 8693 counting only the distinct ones).

The product of its digits is 9261, while the sum is 36.

The square root of 13197717 is about 3632.8662237963. The cubic root of 13197717 is about 236.3195243437.

The spelling of 13197717 in words is "thirteen million, one hundred ninety-seven thousand, seven hundred seventeen".