Base | Representation |
---|---|
bin | 10100111001111010100 |
3 | 1021210122211 |
4 | 2213033110 |
5 | 133410022 |
6 | 22403204 |
7 | 5552056 |
oct | 2471724 |
9 | 1253584 |
10 | 685012 |
11 | 428729 |
12 | 290504 |
13 | 1aca43 |
14 | 13b8d6 |
15 | d7e77 |
hex | a73d4 |
685012 has 6 divisors (see below), whose sum is σ = 1198778. Its totient is φ = 342504.
The previous prime is 685001. The next prime is 685019. The reversal of 685012 is 210586.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 467856 + 217156 = 684^2 + 466^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (685019) by changing a digit.
685012 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85623 + ... + 85630.
2685012 is an apocalyptic number.
It is an amenable number.
685012 is a deficient number, since it is larger than the sum of its proper divisors (513766).
685012 is a wasteful number, since it uses less digits than its factorization.
685012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 171257 (or 171255 counting only the distinct ones).
The product of its (nonzero) digits is 480, while the sum is 22.
The square root of 685012 is about 827.6545172957. The cubic root of 685012 is about 88.1521129458.
Adding to 685012 its reverse (210586), we get a palindrome (895598).
The spelling of 685012 in words is "six hundred eighty-five thousand, twelve".
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