6818040 has 128 divisors (see below), whose sum is σ = 23328000. Its totient is φ = 1770624.

The previous prime is 6818011. The next prime is 6818041. The reversal of 6818040 is 408186.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 6817995 and 6818013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6818041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63667 + ... + 63773.

It is an arithmetic number, because the mean of its divisors is an integer number (182250).

Almost surely, 2^6818040 is an apocalyptic number.

6818040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6818040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11664000).

6818040 is an abundant number, since it is smaller than the sum of its proper divisors (16509960).

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

6818040 is a wasteful number, since it uses less digits than its factorization.

6818040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 6818040 is about 2611.1376830799. The cubic root of 6818040 is about 189.6210359611.

The spelling of 6818040 in words is "six million, eight hundred eighteen thousand, forty".