598921 has 4 divisors (see below), whose sum is σ = 611712. Its totient is φ = 586132.

The previous prime is 598903. The next prime is 598931. The reversal of 598921 is 129895.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-598921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (598931) 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, 6325 + ... + 6418.

It is an arithmetic number, because the mean of its divisors is an integer number (152928).

2⁵⁹⁸⁹²¹ is an apocalyptic number.

It is an amenable number.

598921 is a deficient number, since it is larger than the sum of its proper divisors (12791).

598921 is a wasteful number, since it uses less digits than its factorization.

598921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12790.

The product of its digits is 6480, while the sum is 34.

The square root of 598921 is about 773.8998643235. The cubic root of 598921 is about 84.2926770899.

The spelling of 598921 in words is "five hundred ninety-eight thousand, nine hundred twenty-one".