13983765 has 16 divisors (see below), whose sum is σ = 22420608. Its totient is φ = 7442496.

The previous prime is 13983733. The next prime is 13983773. The reversal of 13983765 is 56738931.

It is not a de Polignac number, because 13983765 - 2⁵ = 13983733 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12624 + ... + 13686.

It is an arithmetic number, because the mean of its divisors is an integer number (1401288).

Almost surely, 2^13983765 is an apocalyptic number.

13983765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13983765 is a deficient number, since it is larger than the sum of its proper divisors (8436843).

13983765 is a wasteful number, since it uses less digits than its factorization.

13983765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948.

The product of its digits is 136080, while the sum is 42.

The square root of 13983765 is about 3739.4872643185. The cubic root of 13983765 is about 240.9210269068.

The spelling of 13983765 in words is "thirteen million, nine hundred eighty-three thousand, seven hundred sixty-five".