6864018 has 48 divisors (see below), whose sum is σ = 16426944. Its totient is φ = 1905120.

The previous prime is 6863993. The next prime is 6864019. The reversal of 6864018 is 8104686.

It is a super-2 number, since 2×6864018² = 94229486208648, which contains 22 as substring.

It is a Curzon number.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 6864018.

It is not an unprimeable number, because it can be changed into a prime (6864019) 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 23 ways as a sum of consecutive naturals, for example, 10563 + ... + 11193.

It is an arithmetic number, because the mean of its divisors is an integer number (342228).

Almost surely, 2^6864018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6864018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8213472).

6864018 is an abundant number, since it is smaller than the sum of its proper divisors (9562926).

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

6864018 is a wasteful number, since it uses less digits than its factorization.

6864018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 6864018 is about 2619.9270982224. The cubic root of 6864018 is about 190.0463229620.

The spelling of 6864018 in words is "six million, eight hundred sixty-four thousand, eighteen".