159645 has 16 divisors (see below), whose sum is σ = 264960. Its totient is φ = 81984.

The previous prime is 159631. The next prime is 159667. The reversal of 159645 is 546951.

It is not a de Polignac number, because 159645 - 2⁴ = 159629 is a prime.

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 159645.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252 + ... + 618.

It is an arithmetic number, because the mean of its divisors is an integer number (16560).

2¹⁵⁹⁶⁴⁵ is an apocalyptic number.

159645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159645 is a deficient number, since it is larger than the sum of its proper divisors (105315).

159645 is a wasteful number, since it uses less digits than its factorization.

159645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404.

The product of its digits is 5400, while the sum is 30.

The square root of 159645 is about 399.5560035840. The cubic root of 159645 is about 54.2481718398.

The spelling of 159645 in words is "one hundred fifty-nine thousand, six hundred forty-five".