You can turn a .rar into an .exe . This allows the recipient to extract the contents even if they don't have archiving software installed.
Many tools like 8 Zip include a built-in player to preview images, music, or documents without extracting them first.
You can add a "recovery record" when creating the archive. This allows you to repair the file if it becomes partially corrupted during download or storage. 87667768678986787.rar
This feature treats multiple small files as one continuous data stream, significantly improving the compression ratio for similar files.
The string appears to be a specific, likely auto-generated or encrypted file name. While there is no widely documented "useful feature" tied specifically to that exact filename string in public databases, the utility of a .rar file generally lies in its archival and compression capabilities. You can turn a
Are you trying to a specific type of data from this file, or
Useful for breaking large files into smaller parts (e.g., .part1.rar , .part2.rar ) to meet email attachment limits or fit on multiple storage devices. You can add a "recovery record" when creating the archive
If this file was found in a system directory or downloaded unexpectedly, exercise caution. Randomly named .rar files can sometimes be used by malware to hide payloads or exfiltrate data.