Base | Representation |
---|---|
bin | 10100111011101011100 |
3 | 1021211220022 |
4 | 2213131130 |
5 | 133422131 |
6 | 22411312 |
7 | 5554520 |
oct | 2473534 |
9 | 1254808 |
10 | 685916 |
11 | 429380 |
12 | 290b38 |
13 | 1b028a |
14 | 13bd80 |
15 | d837b |
hex | a775c |
685916 has 48 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 249600.
The previous prime is 685907. The next prime is 685939. The reversal of 685916 is 619586.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685916.
It is an unprimeable number.
685916 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5171 + ... + 5301.
It is an arithmetic number, because the mean of its divisors is an integer number (33264).
2685916 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 685916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798336).
685916 is an abundant number, since it is smaller than the sum of its proper divisors (910756).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
685916 is a wasteful number, since it uses less digits than its factorization.
685916 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 170 (or 168 counting only the distinct ones).
The product of its digits is 12960, while the sum is 35.
The square root of 685916 is about 828.2004588262. The cubic root of 685916 is about 88.1908735713.
The spelling of 685916 in words is "six hundred eighty-five thousand, nine hundred sixteen".
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