13887697 has 4 divisors (see below), whose sum is σ = 13924720. Its totient is φ = 13850676.

The previous prime is 13887683. The next prime is 13887719. The reversal of 13887697 is 79678831.

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 13887697 - 2⁷ = 13887569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13887697.

It is not an unprimeable number, because it can be changed into a prime (13887677) 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 3 ways as a sum of consecutive naturals, for example, 17943 + ... + 18700.

It is an arithmetic number, because the mean of its divisors is an integer number (3481180).

Almost surely, 2^13887697 is an apocalyptic number.

It is an amenable number.

13887697 is a deficient number, since it is larger than the sum of its proper divisors (37023).

13887697 is an equidigital number, since it uses as much as digits as its factorization.

13887697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37022.

The product of its digits is 508032, while the sum is 49.

The square root of 13887697 is about 3726.6200503942. The cubic root of 13887697 is about 240.3680521829.

The spelling of 13887697 in words is "thirteen million, eight hundred eighty-seven thousand, six hundred ninety-seven".