6561
Number 6561 properties
- 6561 is an odd number.
- 6561 is a perfect square (81 × 81).
Number 6561 - properties and curiosities
6561 (number)
Prime factorization
Prime factorization of 6561: 3^8.
Divisors
Divisor count: 9
1, 3, 9, 27, 81, 243, 729, 2187, 6561
Factors of 6561 are: 1, 3, 9, 27, 81, 243, 729, 2187, 6561.
Representations
In octal, 6561 is represented as 14641.
In binary, 6561 is represented as 1100110100001.
In hex, 6561 is represented as 19A1.
Roman numeral: Roman numerals are shown only for 1 to 4999.
Curiosities
- 6561 is a perfect square, so it forms a square grid with equal side lengths.
Related numbers
Nearby primes: 6547, 6551, 6553, 6563, 6569, 6571
Quick answers
Is 6561 prime?
No, 6561 is not prime.
What are the factors of 6561?
1, 3, 9, 27, 81, 243, 729, 2187, 6561
What is 6561 in binary?
1100110100001