Find the cube root of $15.625$. (in $.5$)

$(35)^{2} \div \sqrt[3]{125} + (25)^{2} \div 125 = ?$

The sum of the square of the first number and the cube of the second number is $568$. Also,the square of the second number is $15$ less than the square of $8$. What is the value of $\frac{3}{5}$ of the first number? (Assuming both numbers are positive)

What is the smallest number by which $5600$ must be divided to make it a perfect cube?

The least perfect cube which is completely divisible by $21, 24$ and $27$ is

The smallest five-digit number which is a perfect cube is