388664 has 16 divisors (see below), whose sum is σ = 767400. Its totient is φ = 184032.

The previous prime is 388657. The next prime is 388673. The reversal of 388664 is 466883.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127 + ... + 1430.

2³⁸⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

388664 is a deficient number, since it is larger than the sum of its proper divisors (378736).

388664 is a wasteful number, since it uses less digits than its factorization.

388664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582 (or 2578 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 388664 is about 623.4292261356. The cubic root of 388664 is about 72.9779128776.

The spelling of 388664 in words is "three hundred eighty-eight thousand, six hundred sixty-four".