Wednesday, November 2, 2016

Number of the day: 660647

George Boole was born on this day 201 years ago.

Properties of the number 660647:

660647 = 13 × 89 × 571 is a sphenic number and squarefree.
660647 has 3 distinct prime factors, 8 divisors, 15 antidivisors and 601920 totatives.
660647 has a prime digit sum 29 in base 10.
Reversing the decimal digits of 660647 results in a sphenic number.
660647 = 3303242 - 3303232 = 254162 - 254032 = 37562 - 36672 = 8642 - 2932 is the difference of 2 nonnegative squares in 4 ways.
660647 is the sum of 2 positive triangular numbers.
660647 is the difference of 2 positive pentagonal numbers in 3 ways.
660647 is not the sum of 3 positive squares.
6606472 = 2894972 + 5938402 = 388282 + 6595052 = 4368152 + 4956282 = 2540952 + 6098282 is the sum of 2 positive squares in 4 ways.
6606472 is the sum of 3 positive squares.
660647 is a divisor of 109132 - 1.
660647 is palindromic in (at least) base 96.
660647 in base 34 = grgr and consists of only the digits 'g' and 'r'.

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