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6868118686 = 2111371338231
BaseRepresentation
bin1100110010101111…
…10010110010011110
3122201122120120122011
412121113302302132
5103031214244221
63053303341434
7332125021432
oct63127626236
918648516564
106868118686
112a04968250
1213b815187a
13855bac070
1449222a9c2
152a2e681e1
hex1995f2c9e

6868118686 has 32 divisors (see below), whose sum is σ = 12273762816. Its totient is φ = 2841132000.

The previous prime is 6868118681. The next prime is 6868118701.

6868118686 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6868118686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868118681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148810 + ... + 189421.

It is an arithmetic number, because the mean of its divisors is an integer number (383555088).

Almost surely, 26868118686 is an apocalyptic number.

6868118686 is a deficient number, since it is larger than the sum of its proper divisors (5405644130).

6868118686 is a wasteful number, since it uses less digits than its factorization.

6868118686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338328.

The product of its digits is 5308416, while the sum is 58.

The square root of 6868118686 is about 82874.1134854546. The cubic root of 6868118686 is about 1900.8416110841.

The spelling of 6868118686 in words is "six billion, eight hundred sixty-eight million, one hundred eighteen thousand, six hundred eighty-six".

Divisors: 1 2 11 13 22 26 71 142 143 286 781 923 1562 1846 10153 20306 338231 676462 3720541 4397003 7441082 8794006 24014401 48028802 48367033 96734066 264158411 312187213 528316822 624374426 3434059343 6868118686