685146 has 32 divisors (see below), whose sum is σ = 1709568. Its totient is φ = 177840.

The previous prime is 685141. The next prime is 685169. The reversal of 685146 is 641586.

685146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (685141) by changing a digit.

685146 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 15 ways as a sum of consecutive naturals, for example, 280 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (53424).

2⁶⁸⁵¹⁴⁶ is an apocalyptic number.

685146 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

685146 is an abundant number, since it is smaller than the sum of its proper divisors (1024422).

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

685146 is a wasteful number, since it uses less digits than its factorization.

685146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506.

The product of its digits is 5760, while the sum is 30.

The square root of 685146 is about 827.7354649887. The cubic root of 685146 is about 88.1578605886.

The spelling of 685146 in words is "six hundred eighty-five thousand, one hundred forty-six".