159786 has 32 divisors (see below), whose sum is σ = 388800. Its totient is φ = 48240.

The previous prime is 159779. The next prime is 159787. The reversal of 159786 is 687951.

It is a self number, because there is not a number n which added to its sum of digits gives 159786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460 + ... + 728.

It is an arithmetic number, because the mean of its divisors is an integer number (12150).

2¹⁵⁹⁷⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194400).

159786 is an abundant number, since it is smaller than the sum of its proper divisors (229014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159786 is a wasteful number, since it uses less digits than its factorization.

159786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 159786 is about 399.7324104948. The cubic root of 159786 is about 54.2641379760.

It can be divided in two parts, 15 and 9786, that added together give a square (9801 = 99²).

The spelling of 159786 in words is "one hundred fifty-nine thousand, seven hundred eighty-six".