159613 has 8 divisors (see below), whose sum is σ = 173880. Its totient is φ = 145920.

The previous prime is 159589. The next prime is 159617. The reversal of 159613 is 316951.

159613 = 282² + 283².

It can be written as a sum of positive squares in 4 ways, for example, as 39204 + 120409 = 198^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159613 - 2¹⁷ = 28541 is a prime.

It is a Duffinian number.

159613 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583 + ... + 811.

It is an arithmetic number, because the mean of its divisors is an integer number (21735).

2¹⁵⁹⁶¹³ is an apocalyptic number.

159613 is the 283-rd centered square number.

It is an amenable number.

159613 is a deficient number, since it is larger than the sum of its proper divisors (14267).

159613 is a wasteful number, since it uses less digits than its factorization.

159613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287.

The product of its digits is 810, while the sum is 25.

The square root of 159613 is about 399.5159571281. The cubic root of 159613 is about 54.2445470108.

The spelling of 159613 in words is "one hundred fifty-nine thousand, six hundred thirteen".