Check the properties of a positive integer to enter the number in the search box. If you input two numbers separated by a space, the properties of the pair like GCD are shown. If you separate two numbers by a comma, the sequences containing those numbers are listed.
61 = 61
| Factor | Count |
|---|---|
| 61 | 1 |
7.81024967590665397665361524559557...
3.93649718310217311412202434439678...
0.0163934426229508
111101
6
75
3d
| Prime number | No |
| Hexagonal number | No |
| Perfect number | No |
| Deficient number | No |
| Abundant number | No |
| Mersenne number | No |
| Harshad number | No |
| Harmonic divisor number | No |
QR61 (sequence)
-1
Properties of the number 61: 61 has 2 divisors. The divisors of 61 are 1, 61 and the sum of them is 62. The factorization of 61 is 61. The square and cube of 61 are 3721 and 226981 respectively. The square root and cube root of 61 are 7.81024967590665397665361524559557... and 3.93649718310217311412202434439678.... The binary, octal, hexadecimal of 61 are 111101, 75, 3d. 61 is not a prime number, not hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, not Harshad number, not harmonic divisor number.
-0.96611777000839293982892286294373...
-0.25810163593826745964676661060366...
3.74316794427241950060647468490060...
0.87461970713939574118001019087387...
0.48480962024633711404675295852940...
1.80404775527142358093612983793719...
4.11087386417331135390895724412985...
1.78532983501076714105693099554628...
5.93073733756288667962053295923397...