659916 has 36 divisors (see below), whose sum is σ = 1742832. Its totient is φ = 210144.

The previous prime is 659899. The next prime is 659917. The reversal of 659916 is 619956.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 659916.

It is not an unprimeable number, because it can be changed into a prime (659917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430 + ... + 1226.

It is an arithmetic number, because the mean of its divisors is an integer number (48412).

2⁶⁵⁹⁹¹⁶ 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 659916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871416).

659916 is an abundant number, since it is smaller than the sum of its proper divisors (1082916).

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

659916 is a wasteful number, since it uses less digits than its factorization.

659916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 825 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 659916 is about 812.3521403923. The cubic root of 659916 is about 87.0621830512.

The spelling of 659916 in words is "six hundred fifty-nine thousand, nine hundred sixteen".