How to indentify application is 32 bit or 64 bit?

[Prajakta]

Is there any utility or command for windows to determine whether the
application is 32 bit or 64 bit?

 

[Peter Ritchie [C# MVP]]

In .Net, you can see if you're running in the 64-bit CLR by checking the size
of the IntPtr type. If you're running 64-bit its size will be 8, in 32-bit
it will be 4.

For example:
public static Boolean Is64Bit()
{
return IntPtr.Size == 8;
}