659928 has 32 divisors (see below), whose sum is σ = 1704960. Its totient is φ = 212640.

The previous prime is 659917. The next prime is 659941. The reversal of 659928 is 829956.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

659928 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, 301 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (53280).

2⁶⁵⁹⁹²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852480).

659928 is an abundant number, since it is smaller than the sum of its proper divisors (1045032).

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

659928 is a wasteful number, since it uses less digits than its factorization.

659928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 923 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 659928 is about 812.3595263182. The cubic root of 659928 is about 87.0627107647.

The spelling of 659928 in words is "six hundred fifty-nine thousand, nine hundred twenty-eight".