DCLXIV

DCLXIV is a Roman numeral that represents the number 664 in the Arabic numeral system. It is constructed by combining several Roman numeral symbols: D, C, L, X, and IV. The symbol D represents 500, C represents 100, L represents 50, X represents 10, and IV represents 4.

To determine the value of DCLXIV, we add the values of the symbols from left to right, taking into account any subtractive notation. The sequence DCL represents 500 + 100 + 50, which equals 650. The final part of the numeral is IV. In Roman numerals, when a symbol of smaller value precedes a symbol of larger value, it indicates subtraction. Therefore, IV represents 5 - 1 = 4.

Combining these parts, DCLXIV is calculated as 650 + 4, resulting in the Arabic numeral 664. This numeral would have been used in ancient Rome for recording numbers in various contexts, such as dates, quantities, or measurements. The system of Roman numerals, while not as universally used today as Arabic numerals, remains a significant part of historical and cultural understanding.