DCXXXV

DCXXXV is the Roman numeral for the number 635. In Roman numerals, D represents 500, C represents 100, XXX represents 30, and V represents 5; adding these values gives 635. The numeral is used in dating and inscriptions where Roman numerals are standard.

From a mathematical standpoint, 635 factors as 5 × 127, with both 5 and 127 being prime. This makes DCXXXV a semiprime. The proper divisors of 635 are 1, 5, and 127, whose sum is 133; since 133 < 635, 635 is a deficient number.

Historically, the sequence DCXXXV can denote the year 635 CE or 635 BCE in contexts that employ Roman numerals for dating. Roman numerals are still encountered in various settings today, such as on clocks, monuments, chapter headings, and in some formal documents, where numeric values are rendered in this additive notation. Unlike some other numerals, DCXXXV does not employ subtractive pairs like IV or XL.

In summary, DCXXXV is a straightforward additive representation of the integer 635 in the Roman numeral system, with both mathematical and historical relevance as a numeric label in various contexts. See also Roman numerals, semiprime, and the number 635.