388685 has 16 divisors (see below), whose sum is σ = 525312. Its totient is φ = 273600.

The previous prime is 388673. The next prime is 388691. The reversal of 388685 is 586883.

It is a happy number.

It is not a de Polignac number, because 388685 - 2⁶ = 388621 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 15 ways as a sum of consecutive naturals, for example, 1940 + ... + 2130.

It is an arithmetic number, because the mean of its divisors is an integer number (32832).

2³⁸⁸⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

388685 is a deficient number, since it is larger than the sum of its proper divisors (136627).

388685 is a wasteful number, since it uses less digits than its factorization.

388685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244.

The product of its digits is 46080, while the sum is 38.

The square root of 388685 is about 623.4460682369. The cubic root of 388685 is about 72.9792272164.

It can be divided in two parts, 3 and 88685, that added together give a palindrome (88688).

The spelling of 388685 in words is "three hundred eighty-eight thousand, six hundred eighty-five".