Number
1,366
1,366 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 16
- Digital root
- 7
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 2,052
Primality
Prime factorization: 2 × 683
Divisors & multiples
Aliquot sum (sum of proper divisors):
686
First multiples
Representations
- In words
- one thousand three hundred sixty-six
- Ordinal
- 1366th
- Roman numeral
- MCCCLXVI
- Binary
- 10101010110
- Octal
- 2526
- Hexadecimal
- 556
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1366, here are decompositions:
- 5 + 1361 = 1366
- 47 + 1319 = 1366
- 59 + 1307 = 1366
- 83 + 1283 = 1366
- 89 + 1277 = 1366
- 107 + 1259 = 1366
- 137 + 1229 = 1366
- 149 + 1217 = 1366
Showing the first eight; more decompositions exist.
Unicode codepoint
Ֆ
U+0556
Uppercase letter (Lu)
UTF-8 encoding: D5 96 (2 bytes).
Hex color
#000556
RGB(0, 5, 86)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.86.