Names of 805
| Nominal | 805 |
| Cardinal | eight hundred five |
| Ordinal | 805th |
| This number as US currency | eight hundred five dollars |
| Is 805 an odd number? | 805 is an odd number |
| Is 805 an even number? | 805 is NOT an even number |
| Is 805 a palindrome? | 805 is NOT a palindrome number |
| Is 805 a triangle number? | 805 is NOT a triangle number |
805 in other Bases
| Base 2 (Binary) | 11001001012 |
| Base 3 (Ternary) | 10022113 |
| Base 4 (Quaternary) | 302114 |
| Base 5 (Quinary) | 112105 |
| Base 6 (Senary) | 34216 |
| Base 8 (Octal) | 14458 |
| Base 12 (Duodecimal) | 57112 |
| Base 16 (Hexadecimal) | 32516 |
| Base 20 (Vigesimal) | 20520 |
Primes and Factors tests for 805
| Is 805 a Prime Number? | 805 is NOT a prime |
| Is 805 a perfect number? | 805 is NOT a perfect number |
| Is 805 a Mersenne Prime? | 805 is NOT a Mersenne prime |
| Is 805 a Fermat Prime? | 805 is NOT a Fermat prime |
| Is 805 a Fibonacci Prime? | 805 is NOT a Fibonacci prime |
| Is 805 a Partition Prime? | 805 is NOT a Partition prime |
| Is 805 a Pell Prime? | 805 is NOT a Pell prime |
| Prime Factors | Prime factors of 805 |
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805 in other Numerals
| 805 in Roman Numeral | DCCCV |
| 805 in Chinese Numeral | 捌佰伍 |
| 805 in Egyptian Numeral | 𓍩𓏾 |
| 805 in Babylonian Numeral |   |
Roots and stuff for 805
| Is 805 a square number? | 805 is NOT a square number |
| Is 805 a cube number? | 805 is NOT a cube number |
| Square root of the number 805 | 28.372521918222 |
| Cube root of the number 805 | 9.3024774684502 |
Recreational math for 805
| Number 805 reversed | 508 |
| Sum of the digits | 13 |
| No of digits | 3 |