13684881 has 16 divisors (see below), whose sum is σ = 22080384. Its totient is φ = 7359744.

The previous prime is 13684877. The next prime is 13684961. The reversal of 13684881 is 18848631.

13684881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13684881 - 2² = 13684877 is a prime.

It is a super-2 number, since 2×13684881² = 374551935968322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13684831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18810 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (1380024).

Almost surely, 2^13684881 is an apocalyptic number.

It is an amenable number.

13684881 is a deficient number, since it is larger than the sum of its proper divisors (8395503).

13684881 is a wasteful number, since it uses less digits than its factorization.

13684881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38360.

The product of its digits is 36864, while the sum is 39.

The square root of 13684881 is about 3699.3081785653. The cubic root of 13684881 is about 239.1921973067.

The spelling of 13684881 in words is "thirteen million, six hundred eighty-four thousand, eight hundred eighty-one".