685464 has 40 divisors (see below), whose sum is σ = 1856460. Its totient is φ = 210912.

The previous prime is 685459. The next prime is 685471. The reversal of 685464 is 464586.

It is a happy number.

685464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (23040) is a multiple of the sum of its prime divisors (18).

It is a congruent number.

It is an unprimeable number.

685464 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 9 ways as a sum of consecutive naturals, for example, 52722 + ... + 52734.

2⁶⁸⁵⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928230).

685464 is an abundant number, since it is smaller than the sum of its proper divisors (1170996).

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

685464 is an equidigital number, since it uses as much as digits as its factorization.

685464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 18 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 685464 is about 827.9275330607. The cubic root of 685464 is about 88.1714975184.

The spelling of 685464 in words is "six hundred eighty-five thousand, four hundred sixty-four".