ISBN 9646629815 hat failed the check­sum digit test.
The following 12 formally correct ISBNs were determined. Starting from these ISBNs the value 9646629815 that you input could have resulted frome one error (error in one digit or transposition of two digits.) You can now check using the links given for the catalogs of amazon.co.uk, amazon.com and amazon.de whether any book is listed for the respective URL. To the home page
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ISBN prefix group: [no known group prefix]
ISBNas­su­med er­rorCatalogs for checking
66469298151st and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Sweden
ISBNas­su­med er­rorCatalogs for checking
91-46-62981-5second digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Iran
ISBNas­su­med er­rorCatalogs for checking
964-6429-81-5fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-6625-81-97th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
964-6626-81-5seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-6628-91-57th and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
964-6629-41-5eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-6629-81-4tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-6629-86-5ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-6649-81-5sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
964-96298-1-5fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Mexico
ISBNas­su­med er­rorCatalogs for checking
968-6629-81-5third digit was chan­ged. amazon.co.uk amazon.com amazon.de

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