159866 has 16 divisors (see below), whose sum is σ = 288960. Its totient is φ = 64800.

The previous prime is 159857. The next prime is 159869. The reversal of 159866 is 668951.

159866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (159869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (18060).

2¹⁵⁹⁸⁶⁶ is an apocalyptic number.

159866 is a deficient number, since it is larger than the sum of its proper divisors (129094).

159866 is a wasteful number, since it uses less digits than its factorization.

159866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629.

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

The square root of 159866 is about 399.8324649150. The cubic root of 159866 is about 54.2731926007.

The spelling of 159866 in words is "one hundred fifty-nine thousand, eight hundred sixty-six".