659958 has 16 divisors (see below), whose sum is σ = 1421616. Its totient is φ = 203040.

The previous prime is 659951. The next prime is 659963. The reversal of 659958 is 859956.

659958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 659958.

It is not an unprimeable number, because it can be changed into a prime (659951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4153 + ... + 4308.

It is an arithmetic number, because the mean of its divisors is an integer number (88851).

2⁶⁵⁹⁹⁵⁸ is an apocalyptic number.

659958 is an abundant number, since it is smaller than the sum of its proper divisors (761658).

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

659958 is a wasteful number, since it uses less digits than its factorization.

659958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479.

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

The square root of 659958 is about 812.3779908392. The cubic root of 659958 is about 87.0640300206.

The spelling of 659958 in words is "six hundred fifty-nine thousand, nine hundred fifty-eight".