7 (number)
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This page is about the number seven. For the year, see 7
The number seven is a natural number that comes after six and before eight. In Roman numerals, it is VII.
Mathematics [change]
In mathematics, the number seven is an odd number and a prime number.
In the world [change]
- There are seven colors in the rainbow.
- The atomic number of nitrogen.
- The number of horizontal rows of elements in the periodic table.
