6221056564 has 36 divisors (see below), whose sum is σ = 11332437732. Its totient is φ = 2987963520.

The previous prime is 6221056561. The next prime is 6221056571. The reversal of 6221056564 is 4656501226.

It can be written as a sum of positive squares in 2 ways, for example, as 3044832400 + 3176224164 = 55180^2 + 56358^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6221056561) 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 11 ways as a sum of consecutive naturals, for example, 520722 + ... + 532534.

It is an arithmetic number, because the mean of its divisors is an integer number (314789937).

Almost surely, 2^6221056564 is an apocalyptic number.

It is an amenable number.

6221056564 is a deficient number, since it is larger than the sum of its proper divisors (5111381168).

6221056564 is a wasteful number, since it uses less digits than its factorization.

6221056564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016 (or 11983 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 6221056564 is about 78873.6747210373. The cubic root of 6221056564 is about 1839.1679212721.

The spelling of 6221056564 in words is "six billion, two hundred twenty-one million, fifty-six thousand, five hundred sixty-four".