70
Everything about the number 70 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 70
| Nominal | 70 |
| Cardinal | seventy |
| Ordinal | 70th |
| This number as US currency | seventy dollars |
Properties (and some facts) of 70
| Is 70 an odd number? | 70 is not an odd number |
| Is 70 an even number? | 70 is an even number |
| Is 70 a palindrome? | 70 is not a palindrome |
| Is 70 a triangle number? | 70 is not a triangle number |
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70 in other bases
| Base 2 (Binary) | 1000110 |
| Base 3 (Ternary) | 2121 |
| Base 4 (Quaternary) | 1012 |
| Base 5 (Quinary) | 240 |
| Base 6 (Senary) | 154 |
| Base 8 (Octal) | 106 |
| Base 12 (Duodecimal) | 5A |
| Base 16 (Hexadecimal) | 46 |
| Base 20 (Vigesimal) | 3A |
Primes and factors tests for 70
| Is 70 a prime number? | 70 is not a prime number |
| Is 70 a perfect number? | 70 is not a perfect number |
| Is 70 a Mersenne prime? | 70 is not a Mersenne prime |
| Is 70 a Fermat prime? | 70 is not a Fermat prime |
| Is 70 a Fibonacci prime? | 70 is not a Fibonacci prime |
| Is 70 a partition prime? | 70 is not a partition prime |
| Is 70 a Pell prime? | 70 is not a Pell prime |
| Prime Factors | Prime factors of 70 |
70 in other numeral systems
| 70 in Roman numerals | LXX |
| 70 in Chinese numerals | 柒拾 |
| 70 in Babylonian numerals |   |
| 70 in Egyptian numerals | 𓎌 |
Roots and squares for 70
| Is 70 a square number? | 70 is not a square number |
| Is 70 a cube number? | 70 is not a cube number |
| Square root of 70 | 8.3666002653408 |
| Cube root of 70 | 4.1212852998086 |
Recreational math for 70
| Number 70 reversed | 07 |
| Sum of the digits | 7 |
| Number of digits | 2 |
Arithmetic tables for 70
Other pages about 70
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