6223021 has 8 divisors (see below), whose sum is σ = 7285824. Its totient is φ = 5203680.

The previous prime is 6223001. The next prime is 6223057. The reversal of 6223021 is 1203226.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6223021 is a prime.

6223021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6222986 and 6223004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6223001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10555 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (910728).

Almost surely, 2^6223021 is an apocalyptic number.

It is an amenable number.

6223021 is a deficient number, since it is larger than the sum of its proper divisors (1062803).

6223021 is a wasteful number, since it uses less digits than its factorization.

6223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21731.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 6223021 is about 2494.5983644667. The cubic root of 6223021 is about 183.9361486862.

Adding to 6223021 its reverse (1203226), we get a palindrome (7426247).

The spelling of 6223021 in words is "six million, two hundred twenty-three thousand, twenty-one".