659960 has 32 divisors (see below), whose sum is σ = 1697760. Its totient is φ = 226176.

The previous prime is 659951. The next prime is 659963. The reversal of 659960 is 69956.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 659960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659963) by changing a digit.

659960 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899 + ... + 1458.

It is an arithmetic number, because the mean of its divisors is an integer number (53055).

2⁶⁵⁹⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

659960 is an abundant number, since it is smaller than the sum of its proper divisors (1037800).

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

659960 is a wasteful number, since it uses less digits than its factorization.

659960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 659960 is about 812.3792217924. The cubic root of 659960 is about 87.0641179696.

The spelling of 659960 in words is "six hundred fifty-nine thousand, nine hundred sixty".