6388704 has 72 divisors (see below), whose sum is σ = 20769840. Its totient is φ = 1824768.

The previous prime is 6388691. The next prime is 6388751. The reversal of 6388704 is 4078836.

6388704 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432 + ... + 3600.

It is an arithmetic number, because the mean of its divisors is an integer number (288470).

Almost surely, 2^6388704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6388704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10384920).

6388704 is an abundant number, since it is smaller than the sum of its proper divisors (14381136).

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

6388704 is a wasteful number, since it uses less digits than its factorization.

6388704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3181 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6388704 is about 2527.5885741157. The cubic root of 6388704 is about 185.5542569593.

The spelling of 6388704 in words is "six million, three hundred eighty-eight thousand, seven hundred four".