13684143 has 32 divisors (see below), whose sum is σ = 20966400. Its totient is φ = 7862400.

The previous prime is 13684141. The next prime is 13684157. The reversal of 13684143 is 34148631.

It is not a de Polignac number, because 13684143 - 2¹ = 13684141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13684143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13684141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75513 + ... + 75693.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^13684143 is an apocalyptic number.

13684143 is a deficient number, since it is larger than the sum of its proper divisors (7282257).

13684143 is a wasteful number, since it uses less digits than its factorization.

13684143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its digits is 6912, while the sum is 30.

The square root of 13684143 is about 3699.2084288399. The cubic root of 13684143 is about 239.1878975003.

The spelling of 13684143 in words is "thirteen million, six hundred eighty-four thousand, one hundred forty-three".