5866
NGC 5866 is a lenticular galaxy seen exactly edge-on.
- Even
- Composite
Where 5866 fits
Why 5866 is special
Its dust lane is unusually thin and straight, which is what a disc looks like when there is no spiral structure stirring it.
Factors & digit properties
- Divisors (8)
- 1, 2, 7, 14, 419, 838, 2933, 5866
- Prime factorisation
- 2 × 7 × 419
- Digit sum
- 25
- Digital root
- 7
Representations
- Decimal
- 5866
- Scientific notation
- 5.866 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 1 1 0 1 1 1 0 1 0 1 0
1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 5,866
Octal
1 3 3 5 2
1 × 4,096 + 3 × 512 + 3 × 64 + 5 × 8 + 2 × 1 = 5,866
Hexadecimal
1 6 e a
1 × 4,096 + 6 × 256 + e × 16 + a × 1 = 5,866
Read as powers of two: 4,096 + 1,024 + 512 + 128 + 64 + 32 + 8 + 2 = 5,866.
In historical numeral systems
Egyptian
5 lotuses, 8 coils of rope, 6 hobbles, 6 strokes
5 × 1,000 + 8 × 100 + 6 × 10 + 6 × 1 = 5,866. 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
- Deficient number
Related numbers & connections
Both are seen at high inclination; one is a spiral and one a lenticular with nothing left to stir its disc.
View 2683 →Science
NGC 5866 is a lenticular galaxy viewed edge-on with a narrow, regular dust lane, lacking the spiral arms that would disturb the disc.
DocumentedSciencePeriod: 1788–
Common questions
Is 5866 a prime number?
No, 5866 is not prime.
What are the factors of 5866?
The factors of 5866 are 1, 2, 7, 14, 419, 838, 2933, 5866.
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