Names of 65
| Nominal | 65 |
| Cardinal | sixty-five |
| Ordinal | 65th |
| This number as US currency | sixty-five dollars |
| Is 65 an odd number? | 65 is an odd number |
| Is 65 an even number? | 65 is NOT an even number |
| Is 65 a palindrome? | 65 is NOT a palindrome number |
| Is 65 a triangle number? | 65 is NOT a triangle number |
65 in other Bases
| Base 2 (Binary) | 10000012 |
| Base 3 (Ternary) | 21023 |
| Base 4 (Quaternary) | 10014 |
| Base 5 (Quinary) | 2305 |
| Base 6 (Senary) | 1456 |
| Base 8 (Octal) | 1018 |
| Base 12 (Duodecimal) | 5512 |
| Base 16 (Hexadecimal) | 4116 |
| Base 20 (Vigesimal) | 3520 |
Primes and Factors tests for 65
| Is 65 a Prime Number? | 65 is NOT a prime |
| Is 65 a perfect number? | 65 is NOT a perfect number |
| Is 65 a Mersenne Prime? | 65 is NOT a Mersenne prime |
| Is 65 a Fermat Prime? | 65 is NOT a Fermat prime |
| Is 65 a Fibonacci Prime? | 65 is NOT a Fibonacci prime |
| Is 65 a Partition Prime? | 65 is NOT a Partition prime |
| Is 65 a Pell Prime? | 65 is NOT a Pell prime |
| Prime Factors | Prime factors of 65 |
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65 in other Numerals
| 65 in Roman Numeral | LXV |
| 65 in Chinese Numeral | 陸拾伍 |
| 65 in Egyptian Numeral | 𓎋𓏾 |
| 65 in Babylonian Numeral |   |
Roots and stuff for 65
| Is 65 a square number? | 65 is NOT a square number |
| Is 65 a cube number? | 65 is NOT a cube number |
| Square root of the number 65 | 8.0622577482985 |
| Cube root of the number 65 | 4.0207257585891 |
Recreational math for 65
| Number 65 reversed | 56 |
| Sum of the digits | 11 |
| No of digits | 2 |