Base | Representation |
---|---|
bin | 10011111011111110111… |
… | …11001000010100001001 |
3 | 2102111012112002221020010 |
4 | 21331333133020110021 |
5 | 42210424344321032 |
6 | 1242411420022133 |
7 | 100330616410635 |
oct | 11757737102411 |
9 | 2374175087203 |
10 | 685038667017 |
11 | 2445835177a1 |
12 | b0922091949 |
13 | 4c7a293baa3 |
14 | 252282a7dc5 |
15 | 12c4587eccc |
hex | 9f7f7c8509 |
685038667017 has 32 divisors (see below), whose sum is σ = 941216348160. Its totient is φ = 443044131840.
The previous prime is 685038667007. The next prime is 685038667037. The reversal of 685038667017 is 710766830586.
It is not a de Polignac number, because 685038667017 - 26 = 685038666953 is a prime.
It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is not an unprimeable number, because it can be changed into a prime (685038667007) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3165592 + ... + 3375062.
It is an arithmetic number, because the mean of its divisors is an integer number (29413010880).
Almost surely, 2685038667017 is an apocalyptic number.
It is an amenable number.
685038667017 is a deficient number, since it is larger than the sum of its proper divisors (256177681143).
685038667017 is a wasteful number, since it uses less digits than its factorization.
685038667017 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 209793.
The product of its (nonzero) digits is 10160640, while the sum is 57.
The spelling of 685038667017 in words is "six hundred eighty-five billion, thirty-eight million, six hundred sixty-seven thousand, seventeen".
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