6816224 has 24 divisors (see below), whose sum is σ = 13676040. Its totient is φ = 3342976.

The previous prime is 6816179. The next prime is 6816233. The reversal of 6816224 is 4226186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314 + ... + 3705.

It is an arithmetic number, because the mean of its divisors is an integer number (569835).

Almost surely, 2^6816224 is an apocalyptic number.

It is an amenable number.

6816224 is an abundant number, since it is smaller than the sum of its proper divisors (6859816).

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

6816224 is a wasteful number, since it uses less digits than its factorization.

6816224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082 (or 4074 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 6816224 is about 2610.7899187794. The cubic root of 6816224 is about 189.6041991391.

It can be divided in two parts, 68162 and 24, that added together give a palindrome (68186).

The spelling of 6816224 in words is "six million, eight hundred sixteen thousand, two hundred twenty-four".