| Base 10 | 661 (3 digits) | ||
| Digit Sum: 13 | Digital Root: 4 | sad | |
| Base 2 | 0b1010010101 (10 digits) | ||
| Digit Sum: 0b101 | Digital Root: 0b1 | always happy | |
| Base 8 | 01225 (4 digits) | ||
| Digit Sum: 012 | Digital Root: 03 | sad | |
| Base 16 | 0x295 (3 digits) | ||
| Digit Sum: 0x10 | Digital Root: 0x1 | happy | |
More about this number at Positiv Integers and Number Empire.
The number is a prime
It is a Twin prime for 659.
| In HTML this number represents this color: |
⇧↑⇧↑⇧↑ #000295 ⇩↓⇩↓⇩↓ |
As Unicode codepoint (since version 1.1) this number represents this character:ʕ LATIN LETTER PHARYNGEAL VOICED FRICATIVE in IPA_Ext (Source: https://ucdapi.org/unicode/latest/codepoint/dec/661); HTML: ʕ
In the work of Johann Sebastian Bach BWV 661 is Nun komm der Heiden Heiland (in Organo pleno, Canto fermo in Pedal)
The number appears at position 969 of the decimal digits of π surrounded by
7818577805321712268066130019278766111959092 Source: The Pi-Search Page
Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 1068.15ms; cpu: 107.762999999998ms)