Names of 640864
| Nominal | 640864 |
| Cardinal | six hundred forty thousand eight hundred sixty-four |
| Ordinal | 640,864th |
| This number as US currency | six hundred forty thousand eight hundred sixty-four dollars |
| Is 640864 an odd number? | 640864 is NOT an odd number |
| Is 640864 an even number? | 640864 is an even number |
| Is 640864 a palindrome? | 640864 is NOT a palindrome number |
| Is 640864 a triangle number? | 640864 is NOT a triangle number |
640864 in other Bases
| Base 2 (Binary) | 100111000111011000002 |
| Base 3 (Ternary) | 10121200022013 |
| Base 4 (Quaternary) | 21301312004 |
| Base 5 (Quinary) | 1310014245 |
| Base 6 (Senary) | 214225446 |
| Base 8 (Octal) | 23435408 |
| Base 12 (Duodecimal) | 26AA5412 |
| Base 16 (Hexadecimal) | 9C76016 |
| Base 20 (Vigesimal) | 4023420 |
Primes and Factors tests for 640864
| Is 640864 a Prime Number? | 640864 is NOT a prime |
| Is 640864 a perfect number? | 640864 is NOT a perfect number |
| Is 640864 a Mersenne Prime? | 640864 is NOT a Mersenne prime |
| Is 640864 a Fermat Prime? | 640864 is NOT a Fermat prime |
| Is 640864 a Fibonacci Prime? | 640864 is NOT a Fibonacci prime |
| Is 640864 a Partition Prime? | 640864 is NOT a Partition prime |
| Is 640864 a Pell Prime? | 640864 is NOT a Pell prime |
| Prime Factors | Prime factors of 640864 |
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640864 in other Numerals
| 640864 in Roman Numeral | DCXLDCCCLXIV |
| 640864 in Chinese Numeral | 陸拾萬肆萬捌佰陸拾肆 |
| 640864 in Egyptian Numeral | 𓆐𓆐𓆐𓆐𓆐𓆐𓂰𓍩𓎋𓏽 |
| 640864 in Babylonian Numeral |     |
Roots and stuff for 640864
| Is 640864 a square number? | 640864 is NOT a square number |
| Is 640864 a cube number? | 640864 is NOT a cube number |
| Square root of the number 640864 | 800.53981787292 |
| Cube root of the number 640864 | 86.216149987851 |
Recreational math for 640864
| Number 640864 reversed | 468046 |
| Sum of the digits | 28 |
| No of digits | 6 |