Base | Representation |
---|---|
bin | 101000111101000… |
… | …110110100001101 |
3 | 1202212220200002001 |
4 | 220331012310031 |
5 | 2401344413331 |
6 | 152103032301 |
7 | 23012213254 |
oct | 5075066415 |
9 | 1685820061 |
10 | 687107341 |
11 | 322943a08 |
12 | 17213b691 |
13 | ac476cbb |
14 | 6737d79b |
15 | 404c7561 |
hex | 28f46d0d |
687107341 has 2 divisors, whose sum is σ = 687107342. Its totient is φ = 687107340.
The previous prime is 687107339. The next prime is 687107347. The reversal of 687107341 is 143701786.
687107341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 608855625 + 78251716 = 24675^2 + 8846^2 .
It is a cyclic number.
It is not a de Polignac number, because 687107341 - 21 = 687107339 is a prime.
Together with 687107339, it forms a pair of twin primes.
It is a self number, because there is not a number n which added to its sum of digits gives 687107341.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (687107347) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343553670 + 343553671.
It is an arithmetic number, because the mean of its divisors is an integer number (343553671).
Almost surely, 2687107341 is an apocalyptic number.
It is an amenable number.
687107341 is a deficient number, since it is larger than the sum of its proper divisors (1).
687107341 is an equidigital number, since it uses as much as digits as its factorization.
687107341 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 28224, while the sum is 37.
The square root of 687107341 is about 26212.7324214779. The cubic root of 687107341 is about 882.4190247964.
The spelling of 687107341 in words is "six hundred eighty-seven million, one hundred seven thousand, three hundred forty-one".
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