6223821 has 8 divisors (see below), whose sum is σ = 8341344. Its totient is φ = 4127760.

The previous prime is 6223817. The next prime is 6223871. The reversal of 6223821 is 1283226.

6223821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6223821 - 2² = 6223817 is a prime.

6223821 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6223791 and 6223800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6223871) 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 7 ways as a sum of consecutive naturals, for example, 4675 + ... + 5856.

It is an arithmetic number, because the mean of its divisors is an integer number (1042668).

Almost surely, 2^6223821 is an apocalyptic number.

It is an amenable number.

6223821 is a deficient number, since it is larger than the sum of its proper divisors (2117523).

6223821 is a wasteful number, since it uses less digits than its factorization.

6223821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731.

The product of its digits is 1152, while the sum is 24.

The square root of 6223821 is about 2494.7587057670. The cubic root of 6223821 is about 183.9440303144.

The spelling of 6223821 in words is "six million, two hundred twenty-three thousand, eight hundred twenty-one".