MathQuarryCalculators

Primes / Is 63 prime?

Is 63 a Prime Number?

No63 = 3^2 x 7

63 is NOT prime: 3 × 21 = 63. That makes 3 a genuine divisor of 63 beyond 1 and 63 itself. Fully broken down, 63 = 3^2 × 7, for 6 divisors total. 63 sits between primes 61 and 67, 2 below and 4 above. 63: 3, 7, 9 divide 63 evenly, checked against 2-12. 63 is odd, digit sum 9 for 63, digital root 9 for 63. 63 has 6 primes within 10 of 63.

Factors
1, 3, 7, 9, 21, 63
Number of factors
6
Prime?
No
Prime factorization
3^2 x 7
Even or odd
Odd
Square
3969
Cube
250047
Binary
111111
Hexadecimal
3F
Roman numeral
LXIII
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Full facts for 63 →Factors of 63 →