660159 has 6 divisors (see below), whose sum is σ = 953576. Its totient is φ = 440100.

The previous prime is 660157. The next prime is 660167. The reversal of 660159 is 951066.

660159 is a `hidden beast` number, since 6 + 601 + 59 = 666.

It is not a de Polignac number, because 660159 - 2¹ = 660157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660157) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 36667 + ... + 36684.

2⁶⁶⁰¹⁵⁹ is an apocalyptic number.

660159 is a deficient number, since it is larger than the sum of its proper divisors (293417).

660159 is a wasteful number, since it uses less digits than its factorization.

660159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73357 (or 73354 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 660159 is about 812.5016923059. The cubic root of 660159 is about 87.0728680041.

The spelling of 660159 in words is "six hundred sixty thousand, one hundred fifty-nine".