🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaРусский中文日本語EntityQ65747· pop 12· linked from 4 articlesRüdiger GammGerman mental calculatorListeners · Last.fmListeners1Total plays2 <a href="https://www.last.fm/music/R%C3%BCdiger+Gamm">Read more on Last.fm</a>via Last.fm · Rüdiger GammConnectionssavant syndromeEntityUnited StatesCountryCategories1971 birthsBiography articles needing translation from German WikipediaLiving peopleMental calculators