6221812 has 12 divisors (see below), whose sum is σ = 11011140. Its totient is φ = 3075776.

The previous prime is 6221773. The next prime is 6221819. The reversal of 6221812 is 2181226.

It can be written as a sum of positive squares in 2 ways, for example, as 820836 + 5400976 = 906^2 + 2324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8383 + ... + 9094.

It is an arithmetic number, because the mean of its divisors is an integer number (917595).

Almost surely, 2^6221812 is an apocalyptic number.

It is an amenable number.

6221812 is a deficient number, since it is larger than the sum of its proper divisors (4789328).

6221812 is a wasteful number, since it uses less digits than its factorization.

6221812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17570 (or 17568 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 6221812 is about 2494.3560291185. The cubic root of 6221812 is about 183.9242362937.

The spelling of 6221812 in words is "six million, two hundred twenty-one thousand, eight hundred twelve".