384685 has 16 divisors (see below), whose sum is σ = 547200. Its totient is φ = 254016.

The previous prime is 384673. The next prime is 384691. The reversal of 384685 is 586483.

It is not a de Polignac number, because 384685 - 2⁹ = 384173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 384685.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 826 + ... + 1204.

It is an arithmetic number, because the mean of its divisors is an integer number (34200).

2³⁸⁴⁶⁸⁵ is an apocalyptic number.

384685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

384685 is a deficient number, since it is larger than the sum of its proper divisors (162515).

384685 is a wasteful number, since it uses less digits than its factorization.

384685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

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

The square root of 384685 is about 620.2297961240. The cubic root of 384685 is about 72.7280177480.

The spelling of 384685 in words is "three hundred eighty-four thousand, six hundred eighty-five".