Discover a lot of information on the number 7: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!

## Numerology and symbolism of the number 7

The number 7 (seven) represents faith, teaching. It symbolizes reflection, the spiritual life.

## Mathematical properties of 7

Questions and answers |

Is 7 a prime number? |
Yes |

Is 7 a perfect number? |
No |

Number of divisors |
2 |

List of dividers |
1, 7 |

Sum of divisors |
8 |

Prime factorization |
7 |

Prime factors |
7 |

## How to write / spell 7 in letters?

In letters, the number 7 is written as: Seven. And in other languages? how does it spell?

7 in other languages |

Write 7 in english |
Seven |

Write 7 in french |
Sept |

Write 7 in spanish |
Siete |

Write 7 in portuguese |
Sete |

## Mathematical representations and links

Other ways to write 7 |

In letter |
Seven |

In roman numeral |
VII |

In binary |
111 |

In octal |
7 |

In hexadecimal |
7 |

In US dollars |
**Deprecated**: Function money_format() is deprecated in **/home/clients/df8caba959271e8e753c9e287ae1296d/websites/crazy-numbers.com/templates/sample-number.tpl** on line **180**
USD 7.00 ($) |

In euros |
**Deprecated**: Function money_format() is deprecated in **/home/clients/df8caba959271e8e753c9e287ae1296d/websites/crazy-numbers.com/templates/sample-number.tpl** on line **185**
7,00 EUR (€) |

Some related numbers |

Previous number |
6 |

Next number |
8 |

Next prime number |
11 |

## Mathematical operations

Operations and solutions |

7*2 |
= |
14 |
The double of 7 is 14 |

7*3 |
= |
21 |
The triple of 7 is 21 |

7/2 |
= |
3.5 |
The half of 7 is 3.500000 |

7/3 |
= |
2.3333333333333 |
The third of 7 is 2.333333 |

7^{2} |
= |
49 |
The square of 7 is 49.000000 |

7^{3} |
= |
343 |
The cube of 7 is 343.000000 |

√7 |
= |
2.6457513110646 |
The square root of 7 is 2.645751 |

log(7) |
= |
1.9459101490553 |
The natural (Neperian) logarithm of 7 is 1.945910 |

log10(7) |
= |
0.84509804001426 |
The decimal logarithm (base 10) of 7 is 0.845098 |

sin(7) |
= |
0.65698659871879 |
The sine of 7 is 0.656987 |

cos(7) |
= |
0.7539022543433 |
The cosine of 7 is 0.753902 |

tan(7) |
= |
0.87144798272432 |
The tangent of 7 is 0.871448 |