zeventig

Zeventig is the cardinal number 70 in Dutch. It follows zestig (60) and precedes tachtig (80). It is used for counting, ages, dates, and measurements.

Etymology: The word zeventig is formed from zeven (seven) and the suffix -tig, which in Dutch historically marks multiples of ten; thus zeventig literally corresponds to seven tens. In the West Germanic language family, related forms appear such as German siebzig.

Numerical properties: 70 is an even composite number. It has eight divisors: 1, 2, 5, 7, 10, 14, 35, 70. It equals 2 × 5 × 7. In Roman numerals it is LXX. In the decimal system it ends with zero, indicating a multiple of ten.

Usage and cultural notes: In everyday speech, 70 is commonly used to indicate age (for example, iemand van zeventig jaar). It also appears in dates (the year 1970), scores, and measurements. In Dutch, the ordinal form is zeventigste (seventy-first). The name is used in various idioms and expressions, though none are singularly defining of Dutch culture.