385684 has 12 divisors (see below), whose sum is σ = 726964. Its totient is φ = 177984.

The previous prime is 385663. The next prime is 385709. The reversal of 385684 is 486583.

It can be written as a sum of positive squares in 2 ways, for example, as 183184 + 202500 = 428^2 + 450^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3657 + ... + 3760.

2³⁸⁵⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

385684 is a deficient number, since it is larger than the sum of its proper divisors (341280).

385684 is a wasteful number, since it uses less digits than its factorization.

385684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7434 (or 7432 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 385684 is about 621.0346206131. The cubic root of 385684 is about 72.7909198513.

The spelling of 385684 in words is "three hundred eighty-five thousand, six hundred eighty-four".