8686 has 8 divisors (see below), whose sum is σ = 13464. Its totient is φ = 4200.

The previous prime is 8681. The next prime is 8689. The reversal of 8686 is 6868.

8686 is nontrivially palindromic in base 9.

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

8686 is an undulating number in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36 + ... + 136.

It is an arithmetic number, because the mean of its divisors is an integer number (1683).

8686 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

8686 is a deficient number, since it is larger than the sum of its proper divisors (4778).

8686 is a wasteful number, since it uses less digits than its factorization.

8686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146.

The product of its digits is 2304, while the sum is 28.

The square root of 8686 is about 93.1987124375. The cubic root of 8686 is about 20.5560630776.

The spelling of 8686 in words is "eight thousand, six hundred eighty-six".