Names of 640001
| Nominal | 640001 |
| Cardinal | six hundred forty thousand one |
| Ordinal | 640,001st |
| This number as US currency | six hundred forty thousand one dollars |
| Is 640001 an odd number? | 640001 is an odd number |
| Is 640001 an even number? | 640001 is NOT an even number |
| Is 640001 a palindrome? | 640001 is NOT a palindrome number |
| Is 640001 a triangle number? | 640001 is NOT a triangle number |
640001 in other Bases
| Base 2 (Binary) | 100111000100000000012 |
| Base 3 (Ternary) | 10121112202023 |
| Base 4 (Quaternary) | 21301000014 |
| Base 5 (Quinary) | 1304400015 |
| Base 6 (Senary) | 214145456 |
| Base 8 (Octal) | 23420018 |
| Base 12 (Duodecimal) | 26A45512 |
| Base 16 (Hexadecimal) | 9C40116 |
| Base 20 (Vigesimal) | 4000120 |
Primes and Factors tests for 640001
| Is 640001 a Prime Number? | 640001 is NOT a prime |
| Is 640001 a perfect number? | 640001 is NOT a perfect number |
| Is 640001 a Mersenne Prime? | 640001 is NOT a Mersenne prime |
| Is 640001 a Fermat Prime? | 640001 is NOT a Fermat prime |
| Is 640001 a Fibonacci Prime? | 640001 is NOT a Fibonacci prime |
| Is 640001 a Partition Prime? | 640001 is NOT a Partition prime |
| Is 640001 a Pell Prime? | 640001 is NOT a Pell prime |
| Prime Factors | Prime factors of 640001 |
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640001 in other Numerals
| 640001 in Roman Numeral | DCXLI |
| 640001 in Chinese Numeral | 陸拾萬肆萬壹 |
| 640001 in Egyptian Numeral | 𓆐𓆐𓆐𓆐𓆐𓆐𓂰𓏺 |
| 640001 in Babylonian Numeral |     |
Roots and stuff for 640001
| Is 640001 a square number? | 640001 is NOT a square number |
| Is 640001 a cube number? | 640001 is NOT a cube number |
| Square root of the number 640001 | 800.00062499976 |
| Cube root of the number 640001 | 86.177432485308 |
Recreational math for 640001
| Number 640001 reversed | 100046 |
| Sum of the digits | 11 |
| No of digits | 6 |