598

598 = 2 x 13 x 23.

598 is the largest number that is the sum of its first digit, the square of its second digit, and the cube of its third digit: 598 = 5¹ + 9² + 8³.

598 is 21112 in base 4. It is 4343 in base 5.

598 is a divisor of 47⁴ - 1.

598 is the maximum number of regions into which 13 spheres divide space.

Source: Number Gossip