610
610 millimetres is the two-foot narrow gauge.
Where 610 fits
Why 610 is special
Narrow gauge lets a railway follow tighter curves through difficult terrain, which is why quarries, plantations and mountain lines chose it over standard gauge.
610 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 5, 10, 61, 122, 305, 610
- Prime factorisation
- 2 × 5 × 61
- Digit sum
- 7
- Digital root
- 7
Representations
- Decimal
- 610
- Binary
- 1001100010
- Octal
- 1142
- Hexadecimal
- 262
- Roman numeral
- DCX
- Scientific notation
- 6.100 × 10^2
Other mathematical patterns
- Deficient number
Related numbers & connections
Three-foot gauge trades some of two-foot's flexibility for capacity, and both were chosen for terrain rather than tradition.
View 914 →Technology & computing
610 mm, nominally two feet, is a common narrow gauge for industrial, quarry and mountain railways, permitting sharper curves and lighter structures than standard gauge requires.
DocumentedTechnology & computingGeography: Used worldwide, notably in Wales, India and southern AfricaPeriod: 19th century–
Common questions
Is 610 a prime number?
No, 610 is not prime.
What are the factors of 610?
The factors of 610 are 1, 2, 5, 10, 61, 122, 305, 610.
What is 610 in Roman numerals?
610 in Roman numerals is DCX.
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