6386868 has 72 divisors (see below), whose sum is σ = 17122560. Its totient is φ = 2004480.

The previous prime is 6386839. The next prime is 6386923. The reversal of 6386868 is 8686836.

6386868 is a `hidden beast` number, since 638 + 6 + 8 + 6 + 8 = 666.

Its product of digits (331776) is a multiple of the sum of its prime divisors (192).

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 23 ways as a sum of consecutive naturals, for example, 65796 + ... + 65892.

Almost surely, 2^6386868 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 6386868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8561280).

6386868 is an abundant number, since it is smaller than the sum of its proper divisors (10735692).

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

6386868 is a wasteful number, since it uses less digits than its factorization.

6386868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 192 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 6386868 is about 2527.2253559982. The cubic root of 6386868 is about 185.5364802576.

Subtracting 6386868 from its reverse (8686836), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 63868 and 68, that added together give a palindrome (63936).

The spelling of 6386868 in words is "six million, three hundred eighty-six thousand, eight hundred sixty-eight".