6388868 has 12 divisors (see below), whose sum is σ = 11244240. Its totient is φ = 3176232.

The previous prime is 6388867. The next prime is 6388891. The reversal of 6388868 is 8688836.

It is not an unprimeable number, because it can be changed into a prime (6388861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3746 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (937020).

Almost surely, 2^6388868 is an apocalyptic number.

It is an amenable number.

6388868 is a deficient number, since it is larger than the sum of its proper divisors (4855372).

6388868 is a wasteful number, since it uses less digits than its factorization.

6388868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9106 (or 9104 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The square root of 6388868 is about 2527.6210158962. The cubic root of 6388868 is about 185.5558446907. Note that the first 3 decimals are identical.

Subtracting 6388868 from its reverse (8688836), we obtain a cube (2299968 = 132³).

The spelling of 6388868 in words is "six million, three hundred eighty-eight thousand, eight hundred sixty-eight".