Base | Representation |
---|---|
bin | 1100110010010000… |
… | …10010101010000101 |
3 | 122201100221010012012 |
4 | 12121020102222011 |
5 | 103024144224132 |
6 | 3053040304005 |
7 | 332045334626 |
oct | 63110225205 |
9 | 18640833165 |
10 | 6864054917 |
11 | 2a02642065 |
12 | 13b6912005 |
13 | 8550b8475 |
14 | 49188da4d |
15 | 2a29140b2 |
hex | 199212a85 |
6864054917 has 2 divisors, whose sum is σ = 6864054918. Its totient is φ = 6864054916.
The previous prime is 6864054881. The next prime is 6864054919. The reversal of 6864054917 is 7194504686.
6864054917 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6230576356 + 633478561 = 78934^2 + 25169^2 .
It is a cyclic number.
It is not a de Polignac number, because 6864054917 - 26 = 6864054853 is a prime.
Together with 6864054919, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (6864054919) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432027458 + 3432027459.
It is an arithmetic number, because the mean of its divisors is an integer number (3432027459).
Almost surely, 26864054917 is an apocalyptic number.
It is an amenable number.
6864054917 is a deficient number, since it is larger than the sum of its proper divisors (1).
6864054917 is an equidigital number, since it uses as much as digits as its factorization.
6864054917 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1451520, while the sum is 50.
The square root of 6864054917 is about 82849.5921353871. The cubic root of 6864054917 is about 1900.4666367243.
The spelling of 6864054917 in words is "six billion, eight hundred sixty-four million, fifty-four thousand, nine hundred seventeen".
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