Names of 66990
| Nominal | 66990 |
| Cardinal | sixty-six thousand nine hundred ninety |
| Ordinal | 66,990th |
| This number as US currency | sixty-six thousand nine hundred ninety dollars |
| Is 66990 an odd number? | 66990 is NOT an odd number |
| Is 66990 an even number? | 66990 is an even number |
| Is 66990 a palindrome? | 66990 is NOT a palindrome number |
| Is 66990 a triangle number? | 66990 is NOT a triangle number |
66990 in other Bases
| Base 2 (Binary) | 100000101101011102 |
| Base 3 (Ternary) | 101012200103 |
| Base 4 (Quaternary) | 1001122324 |
| Base 5 (Quinary) | 41204305 |
| Base 6 (Senary) | 12340506 |
| Base 8 (Octal) | 2026568 |
| Base 12 (Duodecimal) | 3292612 |
| Base 16 (Hexadecimal) | 105AE16 |
| Base 20 (Vigesimal) | 879A20 |
Primes and Factors tests for 66990
| Is 66990 a Prime Number? | 66990 is NOT a prime |
| Is 66990 a perfect number? | 66990 is NOT a perfect number |
| Is 66990 a Mersenne Prime? | 66990 is NOT a Mersenne prime |
| Is 66990 a Fermat Prime? | 66990 is NOT a Fermat prime |
| Is 66990 a Fibonacci Prime? | 66990 is NOT a Fibonacci prime |
| Is 66990 a Partition Prime? | 66990 is NOT a Partition prime |
| Is 66990 a Pell Prime? | 66990 is NOT a Pell prime |
| Prime Factors | Prime factors of 66990 |
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66990 in other Numerals
| 66990 in Roman Numeral | LXVMCMXC |
| 66990 in Chinese Numeral | 陸萬陸仟玖佰玖拾 |
| 66990 in Egyptian Numeral | 𓂲𓇁𓍪𓎎 |
| 66990 in Babylonian Numeral |    |
Roots and stuff for 66990
| Is 66990 a square number? | 66990 is NOT a square number |
| Is 66990 a cube number? | 66990 is NOT a cube number |
| Square root of the number 66990 | 258.82426470484 |
| Cube root of the number 66990 | 40.613460233221 |
Recreational math for 66990
| Number 66990 reversed | 09966 |
| Sum of the digits | 30 |
| No of digits | 5 |