006

006 is the three-digit numeral formed by adding leading zeros to the natural number six. In decimal notation the value is six, but the string "006" is often used in contexts that require fixed-width codes, such as serial numbers, inventory codes, or versioning schemes. Leading zeros help with alignment and sorting in systems that treat codes as records rather than as plain numbers.

In popular culture, 006 is a designation for a fictional MI6 double-0 agent in the James Bond universe. The 00 agents are a select group with license to kill. In the 1995 film GoldenEye, the character Alec Trevelyan is revealed to be 006, portrayed by Sean Bean.

In computing and information processing, numbers with leading zeros can carry specific meanings depending on the language or system. In some programming languages, a leading zero indicates an octal literal, so 006 could be interpreted as octal 6, which equals decimal 6. Many modern languages discourage leading zeros in numeric literals to avoid ambiguity, though fixed-width codes that include leading zeros are common in data formats and text representations.

Outside of these contexts, 006 generally functions as a contextual code or identifier rather than a standalone concept. Its meaning is determined by the domain in which it appears—numerical formatting, entertainment fiction, or technical coding.