159644 has 12 divisors (see below), whose sum is σ = 282744. Its totient is φ = 78864.

The previous prime is 159631. The next prime is 159667. The reversal of 159644 is 446951.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 242 + ... + 614.

It is an arithmetic number, because the mean of its divisors is an integer number (23562).

2¹⁵⁹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

159644 is a deficient number, since it is larger than the sum of its proper divisors (123100).

159644 is a wasteful number, since it uses less digits than its factorization.

159644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 482 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 159644 is about 399.5547521930. The cubic root of 159644 is about 54.2480585713.

The spelling of 159644 in words is "one hundred fifty-nine thousand, six hundred forty-four".