101686 has 8 divisors (see below), whose sum is σ = 164304. Its totient is φ = 46920.

The previous prime is 101681. The next prime is 101693. The reversal of 101686 is 686101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101681) 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, 1930 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (20538).

2¹⁰¹⁶⁸⁶ is an apocalyptic number.

101686 is a deficient number, since it is larger than the sum of its proper divisors (62618).

101686 is a wasteful number, since it uses less digits than its factorization.

101686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 101686 is about 318.8824234730. The cubic root of 101686 is about 46.6752931898.

Adding to 101686 its reverse (686101), we get a palindrome (787787).

It can be divided in two parts, 101 and 686, that added together give a palindrome (787).

The spelling of 101686 in words is "one hundred one thousand, six hundred eighty-six".