Names of 865
| Nominal | 865 |
| Cardinal | eight hundred sixty-five |
| Ordinal | 865th |
| This number as US currency | eight hundred sixty-five dollars |
| Is 865 an odd number? | 865 is an odd number |
| Is 865 an even number? | 865 is NOT an even number |
| Is 865 a palindrome? | 865 is NOT a palindrome number |
| Is 865 a triangle number? | 865 is NOT a triangle number |
865 in other Bases
| Base 2 (Binary) | 11011000012 |
| Base 3 (Ternary) | 10120013 |
| Base 4 (Quaternary) | 312014 |
| Base 5 (Quinary) | 114305 |
| Base 6 (Senary) | 40016 |
| Base 8 (Octal) | 15418 |
| Base 12 (Duodecimal) | 60112 |
| Base 16 (Hexadecimal) | 36116 |
| Base 20 (Vigesimal) | 23520 |
Primes and Factors tests for 865
| Is 865 a Prime Number? | 865 is NOT a prime |
| Is 865 a perfect number? | 865 is NOT a perfect number |
| Is 865 a Mersenne Prime? | 865 is NOT a Mersenne prime |
| Is 865 a Fermat Prime? | 865 is NOT a Fermat prime |
| Is 865 a Fibonacci Prime? | 865 is NOT a Fibonacci prime |
| Is 865 a Partition Prime? | 865 is NOT a Partition prime |
| Is 865 a Pell Prime? | 865 is NOT a Pell prime |
| Prime Factors | Prime factors of 865 |
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865 in other Numerals
| 865 in Roman Numeral | DCCCLXV |
| 865 in Chinese Numeral | 捌佰陸拾伍 |
| 865 in Egyptian Numeral | 𓍩𓎋𓏾 |
| 865 in Babylonian Numeral |   |
Roots and stuff for 865
| Is 865 a square number? | 865 is NOT a square number |
| Is 865 a cube number? | 865 is NOT a cube number |
| Square root of the number 865 | 29.410882339705 |
| Cube root of the number 865 | 9.5280794345458 |
Recreational math for 865
| Number 865 reversed | 568 |
| Sum of the digits | 19 |
| No of digits | 3 |