8686143 has 8 divisors (see below), whose sum is σ = 12868400. Its totient is φ = 5790744.

The previous prime is 8686141. The next prime is 8686147. The reversal of 8686143 is 3416868.

It is a happy number.

It is not a de Polignac number, because 8686143 - 2¹ = 8686141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8686098 and 8686107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8686141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160828 + ... + 160881.

It is an arithmetic number, because the mean of its divisors is an integer number (1608550).

Almost surely, 2^8686143 is an apocalyptic number.

8686143 is a deficient number, since it is larger than the sum of its proper divisors (4182257).

8686143 is a wasteful number, since it uses less digits than its factorization.

8686143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321718 (or 321712 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 8686143 is about 2947.2263231723. The cubic root of 8686143 is about 205.5617588367.

The spelling of 8686143 in words is "eight million, six hundred eighty-six thousand, one hundred forty-three".