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 |
USD 7.00 ($) |
In euros |
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 |
72 |
= |
49 |
The square of 7 is 49.000000 |
73 |
= |
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 |