159686 has 4 divisors (see below), whose sum is σ = 239532. Its totient is φ = 79842.

The previous prime is 159683. The next prime is 159697. The reversal of 159686 is 686951.

159686 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686951 = 67 ⋅10253.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 159686.

It is not an unprimeable number, because it can be changed into a prime (159683) 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 as a sum of consecutive naturals, namely, 39920 + ... + 39923.

It is an arithmetic number, because the mean of its divisors is an integer number (59883).

2¹⁵⁹⁶⁸⁶ is an apocalyptic number.

159686 is a deficient number, since it is larger than the sum of its proper divisors (79846).

159686 is an equidigital number, since it uses as much as digits as its factorization.

159686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79845.

The product of its digits is 12960, while the sum is 35.

The square root of 159686 is about 399.6073072405. The cubic root of 159686 is about 54.2528154442.

The spelling of 159686 in words is "one hundred fifty-nine thousand, six hundred eighty-six".