663384 has 32 divisors (see below), whose sum is σ = 1679040. Its totient is φ = 218400.

The previous prime is 663371. The next prime is 663407. The reversal of 663384 is 483366.

663384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

663384 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3039 + ... + 3249.

It is an arithmetic number, because the mean of its divisors is an integer number (52470).

2⁶⁶³³⁸⁴ is an apocalyptic number.

It is an amenable number.

663384 is an abundant number, since it is smaller than the sum of its proper divisors (1015656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663384 is a wasteful number, since it uses less digits than its factorization.

663384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 347 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 663384 is about 814.4838856601. The cubic root of 663384 is about 87.2144268137.

The spelling of 663384 in words is "six hundred sixty-three thousand, three hundred eighty-four".