# Everything about 7

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

## 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 2.300000 |

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 |