659598 has 16 divisors (see below), whose sum is σ = 1347840. Its totient is φ = 215096.

The previous prime is 659597. The next prime is 659609. The reversal of 659598 is 895956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659591) 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 7 ways as a sum of consecutive naturals, for example, 888 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2⁶⁵⁹⁵⁹⁸ is an apocalyptic number.

659598 is an abundant number, since it is smaller than the sum of its proper divisors (688242).

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

659598 is a wasteful number, since it uses less digits than its factorization.

659598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its digits is 97200, while the sum is 42.

The square root of 659598 is about 812.1563888809. The cubic root of 659598 is about 87.0481963102.

The spelling of 659598 in words is "six hundred fifty-nine thousand, five hundred ninety-eight".