Numbers 64,000,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

60,000,000 61,000,00062,000,00063,000,000 – 64,000,000

65,000,00066,000,00067,000,00068,000,00069,000,000

All Numbers  & [1M] & [10M- [20M] - [30M] - [40M] - [50M] - [60M] - [70M] - [80M] - [90M]  &  [100M]

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64,016,001

[Math.]  Sum of the first 126 cube numbers:

13+23+…+1253+1263 = 64,016,001 = (1+2+…+125+126)2 = 80012.

 

64,048,009

[Math.]  (Sequence of numbers 80…032 = 640…0480…09)

80032 = 64,048,009 = (6+4+04+8009)2.

 

64,080,025

 [Math.]  (Sequence of numbers 80…052 = 640…080…025).

80052 = 64,080,025 = (6+4+08002+5)2.

 

64,256,256

[Math.]  80162 = 64,256,256.

 

4,562,488

[Math.]  A pair of amicable numbers (56924192, 64562488).

 

64,581,663

[Math.]  64,581,663 = 11+32+53+74+95+116+137. 

 

xy,abc,def

[Math.]  For any xy = 10 to 99, there are always six 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 6 digit-rotations of 142,857 and the number xy,abc,def is a multiple of 142,857.

 

For any xy = 10 to 99, there are always twelve 6-digit numbers abc,edf such that the sum (xy+abc,def) is equal to one of 12 digit-rotations of 076,923 or 153,846 and the number xy,abc,def is a multiple of 76,923.