64 in Roman Numerals
64
LXI (subtracted)V
sixty-four
How LXIV is formed
| Place | Value | Symbols |
|---|---|---|
| Tens | 60 | LX |
| Units | 4 | I (subtracted)V |
| Total | 64 | LXIV |
LXIV is written one place at a time, from the largest to the smallest: LX (60) + IV (4) = 64.
IV is the only subtraction: the I before the V takes away 1, so IV = 4.
Common mistakes
Wrong: LXIIII
Why isn't 64 written as LXIIII?
A symbol can't be repeated four times in a row. 4 is IV (5 − 1), not IIII, so 64 is LXIV.
Numbers near 64
Properties of 64
- Prime factors
- 2⁶
- Divisors
- 1, 2, 4, 8, 16, 32, 64
- Even or odd
- Even
- Prime number
- No
- Letters in LXIV
- 4
64 is a perfect square: 8 × 8.64 is a perfect cube: 4 × 4 × 4.
64,000 in Roman numerals
With a bar over it (vinculum), L̅X̅I̅V̅ means 64 × 1,000 = 64,000. How Roman numerals work