685753 has 2 divisors, whose sum is σ = 685754. Its totient is φ = 685752.
The previous prime is 685747. The next prime is 685759. The reversal of 685753 is 357586.
It is a happy number.
It is a balanced prime because it is at equal distance from previous prime (685747) and next prime (685759).
It can be written as a sum of positive squares in only one way, i.e., 685584 + 169 = 828^2 + 13^2 .
It is a cyclic number.
It is not a de Polignac number, because 685753 - 213 = 677561 is a prime.
It is not a weakly prime, because it can be changed into another prime (685759) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342876 + 342877.
It is an arithmetic number, because the mean of its divisors is an integer number (342877).
2685753 is an apocalyptic number.
It is an amenable number.
685753 is a deficient number, since it is larger than the sum of its proper divisors (1).
685753 is an equidigital number, since it uses as much as digits as its factorization.
685753 is an evil number, because the sum of its binary digits is even.
The product of its digits is 25200, while the sum is 34.
The square root of 685753 is about 828.1020468517. The cubic root of 685753 is about 88.1838871710.
The spelling of 685753 in words is "six hundred eighty-five thousand, seven hundred fifty-three".
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