Names of 2661
| Nominal | 2661 |
| Cardinal | two thousand six hundred sixty-one |
| Ordinal | 2,661st |
| This number as US currency | two thousand six hundred sixty-one dollars |
| Is 2661 an odd number? | 2661 is an odd number |
| Is 2661 an even number? | 2661 is NOT an even number |
| Is 2661 a palindrome? | 2661 is NOT a palindrome number |
| Is 2661 a triangle number? | 2661 is NOT a triangle number |
2661 in other Bases
| Base 2 (Binary) | 1010011001012 |
| Base 3 (Ternary) | 101221203 |
| Base 4 (Quaternary) | 2212114 |
| Base 5 (Quinary) | 411215 |
| Base 6 (Senary) | 201536 |
| Base 8 (Octal) | 51458 |
| Base 12 (Duodecimal) | 165912 |
| Base 16 (Hexadecimal) | A6516 |
| Base 20 (Vigesimal) | 6D120 |
Primes and Factors tests for 2661
| Is 2661 a Prime Number? | 2661 is NOT a prime |
| Is 2661 a perfect number? | 2661 is NOT a perfect number |
| Is 2661 a Mersenne Prime? | 2661 is NOT a Mersenne prime |
| Is 2661 a Fermat Prime? | 2661 is NOT a Fermat prime |
| Is 2661 a Fibonacci Prime? | 2661 is NOT a Fibonacci prime |
| Is 2661 a Partition Prime? | 2661 is NOT a Partition prime |
| Is 2661 a Pell Prime? | 2661 is NOT a Pell prime |
| Prime Factors | Prime factors of 2661 |
Sponsored
2661 in other Numerals
| 2661 in Roman Numeral | MMDCLXI |
| 2661 in Chinese Numeral | 貳仟陸佰陸拾壹 |
| 2661 in Egyptian Numeral | 𓆽𓍧𓎋𓏺 |
| 2661 in Babylonian Numeral |   |
Roots and stuff for 2661
| Is 2661 a square number? | 2661 is NOT a square number |
| Is 2661 a cube number? | 2661 is NOT a cube number |
| Square root of the number 2661 | 51.584881506116 |
| Cube root of the number 2661 | 13.857395903046 |
Recreational math for 2661
| Number 2661 reversed | 1662 |
| Sum of the digits | 15 |
| No of digits | 4 |