11686143 has 8 divisors (see below), whose sum is σ = 17807488. Its totient is φ = 6677784.

The previous prime is 11686133. The next prime is 11686177. The reversal of 11686143 is 34168611.

11686143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11686143 - 2⁵ = 11686111 is a prime.

It is the 3419-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11686143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11686133) by changing a digit.

It is a nontrivial repunit in base 3418.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278221 + ... + 278262.

It is an arithmetic number, because the mean of its divisors is an integer number (2225936).

Almost surely, 2^11686143 is an apocalyptic number.

11686143 is a deficient number, since it is larger than the sum of its proper divisors (6121345).

11686143 is an equidigital number, since it uses as much as digits as its factorization.

11686143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556493.

The product of its digits is 3456, while the sum is 30.

The square root of 11686143 is about 3418.5001096972. The cubic root of 11686143 is about 226.9292087148.

The spelling of 11686143 in words is "eleven million, six hundred eighty-six thousand, one hundred forty-three".