086

086 is a numeric string that can refer to several different concepts depending on context. In mathematics, it denotes the integer 86, an even composite number with prime factorization 2 × 43. It is the 43rd even number.

In computing, leading zeros often indicate formatting or a base. A value written as 086 may be treated as decimal 86 in some contexts, but in many programming languages a leading zero signals octal (base-8) notation. Since 086 contains the digit 8, it is not a valid octal literal in languages that require digits 0–7 for octal numbers, and such literals may be invalid or cause errors. Depending on the language, the code may be interpreted differently or rejected.

In telecommunications, the country calling code for China is 86, and the international format is typically written as +86. The sequence 086 can appear in dialing strings or data records as a variant form that reflects a trunk prefix or legacy data conventions, but the widely recognized form for international dialing is +86.

Beyond numbers and dialing, 086 frequently appears as an identifier in fixed-width codes, catalog numbers, or product identifiers in various databases and inventories. In such contexts its meaning is entirely dependent on the specific system or organization using it.

Overall, 086 is primarily a numeric label whose interpretation depends on the domain—mathematics, computing, telecommunications, or data cataloging.