13689897 has 8 divisors (see below), whose sum is σ = 19657344. Its totient is φ = 8424528.

The previous prime is 13689887. The next prime is 13689911. The reversal of 13689897 is 79898631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13689897 - 2¹⁸ = 13427753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13689857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175473 + ... + 175550.

It is an arithmetic number, because the mean of its divisors is an integer number (2457168).

Almost surely, 2^13689897 is an apocalyptic number.

It is an amenable number.

13689897 is a deficient number, since it is larger than the sum of its proper divisors (5967447).

13689897 is a wasteful number, since it uses less digits than its factorization.

13689897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351039.

The product of its digits is 653184, while the sum is 51.

The square root of 13689897 is about 3699.9860810549. The cubic root of 13689897 is about 239.2214179116.

The spelling of 13689897 in words is "thirteen million, six hundred eighty-nine thousand, eight hundred ninety-seven".