7686
RFC 7686 reserves the .onion domain.
- Even
- Composite
Where 7686 fits
Why 7686 is special
A name used by an anonymity network was formally reserved so that ordinary resolvers would not leak the lookup to the public DNS.
Factors & digit properties
- Divisors (24)
- 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 61, 63, 122, 126, 183, 366, 427, 549, 854, 1098, 1281, 2562, 3843, 7686
- Prime factorisation
- 2 × 3^2 × 7 × 61
- Digit sum
- 27
- Digital root
- 9
Representations
- Decimal
- 7686
- Binary
- 1111000000110
- Octal
- 17006
- Hexadecimal
- 1e06
- Scientific notation
- 7.686 × 10^3
Other mathematical patterns
- Abundant number
Related numbers & connections
Reserving the name stops resolvers forwarding the query into the public DNS, where it would disclose the destination.
View 1034 →Technology & computing
RFC 7686 registers .onion as a special-use domain so that resolvers do not forward such queries to the public DNS, where they would disclose the intended destination.
DocumentedTechnology & computingGeography: International — IETFPeriod: 2015
Common questions
Is 7686 a prime number?
No, 7686 is not prime.
What are the factors of 7686?
The factors of 7686 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 61, 63, 122, 126, 183, 366, 427, 549, 854, 1098, 1281, 2562, 3843, 7686.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026