13983687 has 6 divisors (see below), whose sum is σ = 20198672. Its totient is φ = 9322452.

The previous prime is 13983667. The next prime is 13983689. The reversal of 13983687 is 78638931.

It is a happy number.

It is not a de Polignac number, because 13983687 - 2⁷ = 13983559 is a prime.

It is a super-2 number, since 2×13983687² = 391087004227938, 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 (13983689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 776863 + ... + 776880.

Almost surely, 2^13983687 is an apocalyptic number.

13983687 is a deficient number, since it is larger than the sum of its proper divisors (6214985).

13983687 is a wasteful number, since it uses less digits than its factorization.

13983687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553749 (or 1553746 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13983687 is about 3739.4768350666. The cubic root of 13983687 is about 240.9205789618.

The spelling of 13983687 in words is "thirteen million, nine hundred eighty-three thousand, six hundred eighty-seven".