685350 has 36 divisors (see below), whose sum is σ = 1842516. Its totient is φ = 182640.

The previous prime is 685339. The next prime is 685361. The reversal of 685350 is 53586.

685350 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685339) and next prime (685361).

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

685350 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 17 ways as a sum of consecutive naturals, for example, 312 + ... + 1211.

It is an arithmetic number, because the mean of its divisors is an integer number (51181).

2⁶⁸⁵³⁵⁰ is an apocalyptic number.

685350 is an abundant number, since it is smaller than the sum of its proper divisors (1157166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685350 is a wasteful number, since it uses less digits than its factorization.

685350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 685350 is about 827.8586835928. The cubic root of 685350 is about 88.1666092928.

It can be divided in two parts, 6853 and 50, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 685350 in words is "six hundred eighty-five thousand, three hundred fifty".