DCLXVI

DCLXVI is the Roman numeral representation of the number six hundred sixty‑six.

The notation was standardized in early medieval periods using the Latin alphabet, with each letter standing for a specific value: D (500), C (100), L (50), X (10), V (5), and I (1).

In Christian scripture, 666 appears in Revelation 13:18 as the "number of the Beast." This passage has given the numeral its enduring symbolic association with sin, evil, and the apocalyptic figure.

The symbol has also inspired works of fiction and film, such as Stephen King's 1980 novel titled _666_ and the 1988 movie _The Omen_, which further cemented its place in popular culture.

In modern times, the number is employed in numerology, where it is often examined for its supposed metaphysical properties. It also appears in various contexts ranging from marketing slogans to conspiracy theories, frequently invoking the idea of hidden ominous significance.

While the numeral itself denotes a quantity, its cultural resonance spans theology, literature, and art, making it a subject of both scholarly study and popular fascination.