685336 has 8 divisors (see below), whose sum is σ = 1285020. Its totient is φ = 342664.

The previous prime is 685319. The next prime is 685337. The reversal of 685336 is 633586.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 685298 and 685307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42826 + ... + 42841.

2⁶⁸⁵³³⁶ is an apocalyptic number.

It is an amenable number.

685336 is a deficient number, since it is larger than the sum of its proper divisors (599684).

685336 is a wasteful number, since it uses less digits than its factorization.

685336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85673 (or 85669 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 685336 is about 827.8502280002. The cubic root of 685336 is about 88.1660089470.

It can be divided in two parts, 6853 and 36, that added together give a square (6889 = 83²).

The spelling of 685336 in words is "six hundred eighty-five thousand, three hundred thirty-six".