385685 has 4 divisors (see below), whose sum is σ = 462828. Its totient is φ = 308544.

The previous prime is 385663. The next prime is 385709. The reversal of 385685 is 586583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271441 + 114244 = 521^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 385685 - 2⁶ = 385621 is a prime.

It is a Duffinian number.

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, 38564 + ... + 38573.

It is an arithmetic number, because the mean of its divisors is an integer number (115707).

2³⁸⁵⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

385685 is a deficient number, since it is larger than the sum of its proper divisors (77143).

385685 is an equidigital number, since it uses as much as digits as its factorization.

385685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77142.

The product of its digits is 28800, while the sum is 35.

The square root of 385685 is about 621.0354257206. The cubic root of 385685 is about 72.7909827619.

The spelling of 385685 in words is "three hundred eighty-five thousand, six hundred eighty-five".