598591 has 4 divisors (see below), whose sum is σ = 684112. Its totient is φ = 513072.

The previous prime is 598571. The next prime is 598613. The reversal of 598591 is 195895.

598591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 598591 - 2⁷ = 598463 is a prime.

It is a super-2 number, since 2×598591² = 716622370562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 598591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (598501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42750 + ... + 42763.

It is an arithmetic number, because the mean of its divisors is an integer number (171028).

2⁵⁹⁸⁵⁹¹ is an apocalyptic number.

598591 is a deficient number, since it is larger than the sum of its proper divisors (85521).

598591 is an equidigital number, since it uses as much as digits as its factorization.

598591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85520.

The product of its digits is 16200, while the sum is 37.

The square root of 598591 is about 773.6866290689. The cubic root of 598591 is about 84.2771927473.

It can be divided in two parts, 5 and 98591, that added together give a square (98596 = 314²).

The spelling of 598591 in words is "five hundred ninety-eight thousand, five hundred ninety-one".