388663 has 8 divisors (see below), whose sum is σ = 429840. Its totient is φ = 348480.

The previous prime is 388657. The next prime is 388673. The reversal of 388663 is 366883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388663 - 2¹⁷ = 257591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388673) 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 7 ways as a sum of consecutive naturals, for example, 781 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (53730).

2³⁸⁸⁶⁶³ is an apocalyptic number.

388663 is a deficient number, since it is larger than the sum of its proper divisors (41177).

388663 is a wasteful number, since it uses less digits than its factorization.

388663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its digits is 20736, while the sum is 34.

The square root of 388663 is about 623.4284241194. The cubic root of 388663 is about 72.9778502888.

The spelling of 388663 in words is "three hundred eighty-eight thousand, six hundred sixty-three".