6221504 has 28 divisors (see below), whose sum is σ = 12652248. Its totient is φ = 3033600.

The previous prime is 6221497. The next prime is 6221539. The reversal of 6221504 is 4051226.

It is a happy number.

It is a super-2 number, since 2×6221504² = 77414224044032, which contains 22 as substring.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439 + ... + 3809.

It is an arithmetic number, because the mean of its divisors is an integer number (451866).

Almost surely, 2^6221504 is an apocalyptic number.

6221504 is a gapful number since it is divisible by the number (64) 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 6221504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6326124).

6221504 is an abundant number, since it is smaller than the sum of its proper divisors (6430744).

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

6221504 is a wasteful number, since it uses less digits than its factorization.

6221504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424 (or 2414 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 6221504 is about 2494.2942889723. The cubic root of 6221504 is about 183.9212012936.

The spelling of 6221504 in words is "six million, two hundred twenty-one thousand, five hundred four".