13873687 has 4 divisors (see below), whose sum is σ = 14352120. Its totient is φ = 13395256.

The previous prime is 13873681. The next prime is 13873721. The reversal of 13873687 is 78637831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78637831 = 107 ⋅734933.

It is a cyclic number.

It is not a de Polignac number, because 13873687 - 2³ = 13873679 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 (13873681) 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, 239173 + ... + 239230.

It is an arithmetic number, because the mean of its divisors is an integer number (3588030).

Almost surely, 2^13873687 is an apocalyptic number.

13873687 is a deficient number, since it is larger than the sum of its proper divisors (478433).

13873687 is an equidigital number, since it uses as much as digits as its factorization.

13873687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478432.

The product of its digits is 169344, while the sum is 43.

The square root of 13873687 is about 3724.7398566880. The cubic root of 13873687 is about 240.2871966974.

The spelling of 13873687 in words is "thirteen million, eight hundred seventy-three thousand, six hundred eighty-seven".