84 is a semiperfect number, [1] being thrice a perfect number, and the sum of the sixth pair of twin primes . [2] It is the number of four-digit perfect powers in decimal.

Discover the fascinating world of the number 84! Explore its significance in mathematics, science, religion, angel numbers, folklore, arts, and more. Unlock hidden meanings and facts today.

5 days ago · The former counterintelligence officer, who was serving a life sentence without the possibility of parole, died Jan. 5. He was 84.

Explore the curious properties of number 84, an even composite number composed of three distinct primes. Includes mathematical info, prime factorization, divisors, bases and much more!

5 days ago · CIA turncoat Aldrich Ames, who betrayed Western intelligence assets to the Soviet Union and Russia, has died in a Maryland prison.

84 is a semiperfect number, being thrice a perfect number, and the sum of the sixth pair of twin primes (41 + 43). It is the third (or second) dodecahedral number, and the sum of the first seven triangular …

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The number 84 can be divided by 12 positive divisors (out of which 8 are even, and 4 are odd). The sum of these divisors (counting 84) is 224, the average is 18.666.

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