6866385 has 16 divisors (see below), whose sum is σ = 11632896. Its totient is φ = 3446528.

The previous prime is 6866383. The next prime is 6866389. The reversal of 6866385 is 5836686.

It is a cyclic number.

It is not a de Polignac number, because 6866385 - 2¹ = 6866383 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6866381) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13209 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (727056).

Almost surely, 2^6866385 is an apocalyptic number.

It is an amenable number.

6866385 is a deficient number, since it is larger than the sum of its proper divisors (4766511).

6866385 is a wasteful number, since it uses less digits than its factorization.

6866385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26952.

The product of its digits is 207360, while the sum is 42.

The square root of 6866385 is about 2620.3787894119. The cubic root of 6866385 is about 190.0681657538.

The spelling of 6866385 in words is "six million, eight hundred sixty-six thousand, three hundred eighty-five".