13197663 has 6 divisors (see below), whose sum is σ = 19063304. Its totient is φ = 8798436.

The previous prime is 13197659. The next prime is 13197683. The reversal of 13197663 is 36679131.

It is not a de Polignac number, because 13197663 - 2² = 13197659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13197643) 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 5 ways as a sum of consecutive naturals, for example, 733195 + ... + 733212.

Almost surely, 2^13197663 is an apocalyptic number.

13197663 is a deficient number, since it is larger than the sum of its proper divisors (5865641).

13197663 is a wasteful number, since it uses less digits than its factorization.

13197663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466413 (or 1466410 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 13197663 is about 3632.8587916405. The cubic root of 13197663 is about 236.3192020337.

The spelling of 13197663 in words is "thirteen million, one hundred ninety-seven thousand, six hundred sixty-three".