386685 has 24 divisors (see below), whose sum is σ = 722904. Its totient is φ = 190080.

The previous prime is 386677. The next prime is 386689. The reversal of 386685 is 586683.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 356409 = 174^2 + 597^2 .

It is not a de Polignac number, because 386685 - 2³ = 386677 is a prime.

It is a Curzon number.

It is a nialpdrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255 + ... + 915.

It is an arithmetic number, because the mean of its divisors is an integer number (30121).

2³⁸⁶⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

386685 is a deficient number, since it is larger than the sum of its proper divisors (336219).

386685 is a wasteful number, since it uses less digits than its factorization.

386685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 682 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 386685 is about 621.8400115785. The cubic root of 386685 is about 72.8538390329.

The spelling of 386685 in words is "three hundred eighty-six thousand, six hundred eighty-five".