159906 has 16 divisors (see below), whose sum is σ = 331200. Its totient is φ = 51408.

The previous prime is 159899. The next prime is 159911. The reversal of 159906 is 609951.

It is an unprimeable number.

159906 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 286 + ... + 633.

It is an arithmetic number, because the mean of its divisors is an integer number (20700).

2¹⁵⁹⁹⁰⁶ is an apocalyptic number.

159906 is an abundant number, since it is smaller than the sum of its proper divisors (171294).

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

159906 is a wasteful number, since it uses less digits than its factorization.

159906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 159906 is about 399.8824827371. The cubic root of 159906 is about 54.2777187802.

The spelling of 159906 in words is "one hundred fifty-nine thousand, nine hundred six".