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7 (number)
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Cardinal  seven  
Ordinal 
7th (seventh)  
Factorization  prime  
Prime  4th  
Divisors  1, 7  
Roman numeral  VII  
Roman numeral (unicode)  Ⅶ, ⅶ  
Greek prefix  hepta/hept  
Latin prefix  septua  
Binary  111_{2}  
Ternary  21_{3}  
Quaternary  13_{4}  
Quinary  12_{5}  
Senary  11_{6}  
Octal  7_{8}  
Duodecimal  7_{12}  
Hexadecimal  7_{16}  
Vigesimal  7_{20}  
Base 36  7_{36}  
Greek numeral  Z, ζ  
Amharic  ፯  
Arabic  ٧,7  
Persian  ٧  هفت  
Urdu  
Bengali  ৭  
Chinese numeral  七(qi)  
Devanāgarī  ७ (saat)  
Telugu  ౭  
Tamil  ௭  
Hebrew  ז (Zayin)  
Khmer  ៧  
Thai  ๗ 
The number seven is a natural number that comes after six and before eight. In Roman numerals, it is VII.
Mathematics
In mathematics, the number seven is an odd number and a prime number.
In the world
 There are seven colors in the rainbow.
 The atomic number of nitrogen.
 The number of horizontal rows of elements in the periodic table.

