685342 has 8 divisors (see below), whose sum is σ = 1174896. Its totient is φ = 293712.

The previous prime is 685339. The next prime is 685361. The reversal of 685342 is 243586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 685342.

It is a congruent number.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 24463 + ... + 24490.

It is an arithmetic number, because the mean of its divisors is an integer number (146862).

2⁶⁸⁵³⁴² is an apocalyptic number.

685342 is a deficient number, since it is larger than the sum of its proper divisors (489554).

685342 is a wasteful number, since it uses less digits than its factorization.

685342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48962.

The product of its digits is 5760, while the sum is 28.

The square root of 685342 is about 827.8538518362. The cubic root of 685342 is about 88.1662662391.

It can be divided in two parts, 685 and 342, that multiplied together give a triangular number (234270 = T₆₈₄).

The spelling of 685342 in words is "six hundred eighty-five thousand, three hundred forty-two".