9660
ISO 9660 is the CD-ROM filesystem standard.
- Even
- Composite
Where 9660 fits
Why 9660 is special
It had to work on systems that disagreed about filenames, so the original restricted names to eight characters, a dot and three more, in capitals only. Every extension since has been a workaround for that compromise.
Factors & digit properties
- Divisors (48)
- 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 105, 115, 138, 140, 161, 210, 230, 276, 322, 345, 420, 460, 483, 644, 690, 805, 966, 1380, 1610, 1932, 2415, 3220, 4830, 9660
- Prime factorisation
- 2^2 × 3 × 5 × 7 × 23
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 9660
- Scientific notation
- 9.660 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 1 0 1 1 0 1 1 1 1 0 0
1 × 8,192 + 0 × 4,096 + 0 × 2,048 + 1 × 1,024 + 0 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 9,660
Octal
2 2 6 7 4
2 × 4,096 + 2 × 512 + 6 × 64 + 7 × 8 + 4 × 1 = 9,660
Hexadecimal
2 5 b c
2 × 4,096 + 5 × 256 + b × 16 + c × 1 = 9,660
Read as powers of two: 8,192 + 1,024 + 256 + 128 + 32 + 16 + 8 + 4 = 9,660.
In historical numeral systems
Egyptian
9 lotuses, 6 coils of rope, 6 hobbles
9 × 1,000 + 6 × 100 + 6 × 10 = 9,660. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Two standards that made documents and discs readable across incompatible systems. Both traded capability for universality, and both outlived the systems they were reconciling.
View 32000 →Other connections
- is associated with32000
why?
Strength 0.50, confidence "high".
Technology & computing
ISO 9660 restricted filenames severely so a disc would read on any operating system. Joliet, Rock Ridge and every later extension exist to escape those limits while remaining readable by systems that only understand the original.
DocumentedTechnology & computing
Common questions
Is 9660 a prime number?
No, 9660 is not prime.
What are the factors of 9660?
The factors of 9660 are 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 105, 115, 138, 140, 161, 210, 230, 276, 322, 345, 420, 460, 483, 644, 690, 805, 966, 1380, 1610, 1932, 2415, 3220, 4830, 9660.
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: 15 July 2026