659898 has 24 divisors (see below), whose sum is σ = 1455636. Its totient is φ = 216000.

The previous prime is 659881. The next prime is 659899. The reversal of 659898 is 898956.

It can be written as a sum of positive squares in 2 ways, for example, as 651249 + 8649 = 807^2 + 93^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659899) 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, 798 + ... + 1398.

2⁶⁵⁹⁸⁹⁸ is an apocalyptic number.

659898 is an abundant number, since it is smaller than the sum of its proper divisors (795738).

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

659898 is a wasteful number, since it uses less digits than its factorization.

659898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 667 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 659898 is about 812.3410613775. The cubic root of 659898 is about 87.0613914688.

The spelling of 659898 in words is "six hundred fifty-nine thousand, eight hundred ninety-eight".