Get the bittness of an exe or dll.

Get-ProgramBit.ps1

function Get-ProgramBit {
    [CmdletBinding()]
    param ([string]$Path)
    process {
        if (-not $(Test-Path -Path $Path -ErrorAction SilentlyContinue)) {
            Write-Error "Invalid Path"
            return
        }
        $re32 = [regex]::new('PE\W\WL')
        Get-Content -Path $Path -ReadCount 1 | ForEach-Object {
            if ($re32.Match($_).Success) {
                return 32
            }
        }
        return 64
    }
}