## Thinking Mathematically (6th Edition)

The given number is divisible by $9$.
A number is divisible by $9$ if the sum of all its digits is divisible by $9$. The sum of the digits of the given number is: $=4+8+2+0+1+6+5+1 \\=27$ Note that $27$ is divisible by $9$ since $9(3) = 27$. Thus, the given number is divisible by $9$.