The number 64 can be expressed as a power of 2 as follows:

$64 = 2^6$

This means that $2$ raised to the power of $6$ equals $64$.

Would you like more details on how to find this, or do you have any questions?

Here are some related questions:

1. How do you express other numbers as powers of 2?
2. What is the significance of powers of 2 in binary systems?
3. Can 64 be expressed as a power of any other number?
4. How do you calculate powers of numbers manually?
5. What are some real-life applications of powers of 2?

Tip: Powers of 2 are commonly used in computer science, especially in areas related to memory and data storage, because computers operate using binary (base-2) systems.