# Dictionary Definition

seventy adj : being ten more than sixty [syn: 70, lxx] n : the cardinal number that is the product of ten and seven [syn: 70, LXX]

# User Contributed Dictionary

## English

### Number

seventy
1. The cardinal number occurring after sixty-nine and before seventy-one, represented in Roman numerals as LXX and in Arabic numerals as 70. Ordinal: seventieth.

cardinal number

# Extensive Definition

70 (seventy) is the natural number following 69 and preceding 71.

## In mathematics

Its factorization makes it a sphenic number. 70 is a Pell number and a generalized heptagonal number, one of only two numbers to be both. Also, it is the seventh pentagonal number and the fourth 13-gonal number, as well as the fifth pentatope number. It is the smallest weird number.
Since it is possible to find sequences of 70 consecutive integers such that each inner member member shares a factor with either the first or the last member, 70 is an Erdős–Woods number.
In base 10, it is a Harshad number.

70 is:

## Number name

The French do not have a word for 70, instead using "soixante-dix" (60 + 10). Other French-speaking countries such as Belgium and Switzerland do have a word for it, using "septante."

## Notes

seventy in Catalan: Setanta
seventy in Chuvash: 70 (хисеп)
seventy in Corsican: 70 (numeru)
seventy in Danish: 70 (tal)
seventy in Spanish: Setenta
seventy in Esperanto: Sepdek
seventy in Basque: Hirurogeita hamar
seventy in French: 70 (nombre)
seventy in Gan Chinese: 70
seventy in Korean: 70
seventy in Interlingua (International Auxiliary Language Association): 70 (numero)
seventy in Italian: 70 (numero)
seventy in Hebrew: 70 (מספר)
seventy in Haitian: 70 (nonm)
seventy in Kurdish: Heftê
seventy in Lithuanian: 70 (skaičius)
seventy in Lombard: Nümar 70
seventy in Hungarian: 70 (szám)
seventy in Malay (macrolanguage): 70 (nombor)
seventy in Dutch: 70 (getal)
seventy in Japanese: 70
seventy in Norwegian: 70 (tall)
seventy in Polish: 70 (liczba)
seventy in Portuguese: Setenta
seventy in Russian: 70 (число)
seventy in Simple English: Seventy
seventy in Slovenian: 70 (število)
seventy in Swedish: 70 (tal)
seventy in Thai: 70
seventy in Vietnamese: 70 (số)
seventy in Wu Chinese: 70
seventy in Yiddish: 70 (נומער)
seventy in Contenese: 70
seventy in Chinese: 70