Numbers 870-879
A page of the Numeropedia - the Special Encyclopedia of Numbers

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870

[Math.]  The denominator of the Bernoulli numbers: B28 = 23749461029/870 (and B56…)

[Math.]  870 = 8+7+0+83+73+03.

871

[Library]   ISBN-0-871 is the International Standard Book Number for books published by PWS-Kent Publishing Company.

[Math.]  871 = 4!+5!+3!+6!+1! and 45,361 = 8!+7!+1!.

872

873

[Math.]  Sum of the first 6 factorials: 1!+2!+3!+4!+5!+6! = 873.

874

[Math.]  Sum of the first 7 factorials, including 0!: 0!+1!+2!+3!+4!+5!+6! = 874.

[Math.]  8742 = 763876 = (+7–6–3+876)2.

875

[Math.]  Its odd powers end with 875. Its even powers end with 625.

876

[Math.]  All of its powers end with 376.

[Phone]  The telephone area code for Jamaica (within U.S./NANPA).

[World]  The ISO country code for Wallis and Futuna Islands. (ISO-3166)

877

[Math.]  A prime number.

[Math.] (232+767 = 999 = 212+787)

2322 = 053,824 & 053+824 = 877

7672 = 588,289 & 588+289 = 877 and

2122 = 044,944 & 044+944 = 988

7872 = 619,369 & 619+369 = 988.

[Phone]  An area code for the toll-free (or WATS: Wide Area Telecommunications Service) telephone number, dialing within the U.S. and Canada. Besides the original number 800, there are: 888, 877, 866 and 855 and will be 844, 833 and 822.

878

[Math.]  (121+878 = 999 = 101+898)

1212 = 014,641 & 014+641 = 655

8782 = 770,884 & 770+884 = 1654 and 1+654 = 655.

and

1012 = 010,201 & 010+201 = 211

8982 = 806,404 & 806+404 = 1210 and 1+210 = 211.

870-879

[Library]  Numbers 800-899 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Literature. Numbers 870-879 are for books in Latin Literature.