659660 has 12 divisors (see below), whose sum is σ = 1385328. Its totient is φ = 263856.

The previous prime is 659657. The next prime is 659669. The reversal of 659660 is 66956.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (659669) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16472 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (115444).

2⁶⁵⁹⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

659660 is an abundant number, since it is smaller than the sum of its proper divisors (725668).

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

659660 is a wasteful number, since it uses less digits than its factorization.

659660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32992 (or 32990 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 659660 is about 812.1945579724. The cubic root of 659660 is about 87.0509236376.

Subtracting from 659660 its reverse (66956), we obtain a cube (592704 = 84³).

The spelling of 659660 in words is "six hundred fifty-nine thousand, six hundred sixty".