598640 has 40 divisors (see below), whose sum is σ = 1592160. Its totient is φ = 205056.

The previous prime is 598613. The next prime is 598643. The reversal of 598640 is 46895.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 598597 and 598606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (598643) 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, 26 + ... + 1094.

It is an arithmetic number, because the mean of its divisors is an integer number (39804).

2⁵⁹⁸⁶⁴⁰ 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 598640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796080).

598640 is an abundant number, since it is smaller than the sum of its proper divisors (993520).

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

598640 is a wasteful number, since it uses less digits than its factorization.

598640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 598640 is about 773.7182949886. The cubic root of 598640 is about 84.2794922973.

The spelling of 598640 in words is "five hundred ninety-eight thousand, six hundred forty".