13689197 has 4 divisors (see below), whose sum is σ = 14130816. Its totient is φ = 13247580.

The previous prime is 13689191. The next prime is 13689227. The reversal of 13689197 is 79198631.

13689197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13689197 - 2⁶ = 13689133 is a prime.

It is a super-2 number, since 2×13689197² = 374788229009618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13689191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220763 + ... + 220824.

It is an arithmetic number, because the mean of its divisors is an integer number (3532704).

Almost surely, 2^13689197 is an apocalyptic number.

It is an amenable number.

13689197 is a deficient number, since it is larger than the sum of its proper divisors (441619).

13689197 is an equidigital number, since it uses as much as digits as its factorization.

13689197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441618.

The product of its digits is 81648, while the sum is 44.

The square root of 13689197 is about 3699.8914848952. The cubic root of 13689197 is about 239.2173405045.

The spelling of 13689197 in words is "thirteen million, six hundred eighty-nine thousand, one hundred ninety-seven".