Is the square of $61$ even or odd ?

Is the square of $1326$ even or odd ?

Is the square of $455$ even or odd ?

Is the square of $676$ even or odd ?

Check whether $1857$ is a perfect square? Give reasons.$$

Check whether $56000$ is a perfect square? Give reasons.

Check whether $8392$ is a perfect square? Give reasons.$$

Check whether $1600000$ is a perfect square? Give reasons.$$

Check whether $4298$ is a perfect square? Give reasons.