686852 has 6 divisors (see below), whose sum is σ = 1201998. Its totient is φ = 343424.

The previous prime is 686843. The next prime is 686863. The reversal of 686852 is 258686.

It can be written as a sum of positive squares in only one way, i.e., 568516 + 118336 = 754^2 + 344^2 .

It is an unprimeable number.

686852 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 as a sum of consecutive naturals, namely, 85853 + ... + 85860.

It is an arithmetic number, because the mean of its divisors is an integer number (200333).

2⁶⁸⁶⁸⁵² is an apocalyptic number.

It is an amenable number.

686852 is a deficient number, since it is larger than the sum of its proper divisors (515146).

686852 is a wasteful number, since it uses less digits than its factorization.

686852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171717 (or 171715 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 686852 is about 828.7653467659. The cubic root of 686852 is about 88.2309703851.

The spelling of 686852 in words is "six hundred eighty-six thousand, eight hundred fifty-two".