598639 has 6 divisors (see below), whose sum is σ = 613904. Its totient is φ = 583740.

The previous prime is 598613. The next prime is 598643. The reversal of 598639 is 936895.

598639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 598639 - 2⁹ = 598127 is a prime.

It is a Duffinian number.

598639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (598649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2074 + ... + 2344.

2⁵⁹⁸⁶³⁹ is an apocalyptic number.

598639 is a deficient number, since it is larger than the sum of its proper divisors (15265).

598639 is an equidigital number, since it uses as much as digits as its factorization.

598639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 318 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 598639 is about 773.7176487583. The cubic root of 598639 is about 84.2794453690.

The spelling of 598639 in words is "five hundred ninety-eight thousand, six hundred thirty-nine".