6864143 has 16 divisors (see below), whose sum is σ = 8418816. Its totient is φ = 5507040.

The previous prime is 6864139. The next prime is 6864167. The reversal of 6864143 is 3414686.

It is not a de Polignac number, because 6864143 - 2² = 6864139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6864173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2246 + ... + 4332.

It is an arithmetic number, because the mean of its divisors is an integer number (526176).

Almost surely, 2^6864143 is an apocalyptic number.

6864143 is a deficient number, since it is larger than the sum of its proper divisors (1554673).

6864143 is a wasteful number, since it uses less digits than its factorization.

6864143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134.

The product of its digits is 13824, while the sum is 32.

The square root of 6864143 is about 2619.9509537394. The cubic root of 6864143 is about 190.0474765937.

It can be divided in two parts, 6864 and 143, that added together give a palindrome (7007).

The spelling of 6864143 in words is "six million, eight hundred sixty-four thousand, one hundred forty-three".