685058 has 8 divisors (see below), whose sum is σ = 1121040. Its totient is φ = 311380.

The previous prime is 685057. The next prime is 685063. The reversal of 685058 is 850586.

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

It is not an unprimeable number, because it can be changed into a prime (685051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15548 + ... + 15591.

It is an arithmetic number, because the mean of its divisors is an integer number (140130).

2⁶⁸⁵⁰⁵⁸ is an apocalyptic number.

685058 is a deficient number, since it is larger than the sum of its proper divisors (435982).

685058 is a wasteful number, since it uses less digits than its factorization.

685058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31152.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 685058 is about 827.6823062021. The cubic root of 685058 is about 88.1540861017.

The spelling of 685058 in words is "six hundred eighty-five thousand, fifty-eight".