6221313256 has 8 divisors (see below), whose sum is σ = 11664962370. Its totient is φ = 3110656624.

The previous prime is 6221313253. The next prime is 6221313269. The reversal of 6221313256 is 6523131226.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6094300356 + 127012900 = 78066^2 + 11270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6221313253) 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 as a sum of consecutive naturals, namely, 388832071 + ... + 388832086.

Almost surely, 2^6221313256 is an apocalyptic number.

It is an amenable number.

6221313256 is a deficient number, since it is larger than the sum of its proper divisors (5443649114).

6221313256 is a wasteful number, since it uses less digits than its factorization.

6221313256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777664163 (or 777664159 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 6221313256 is about 78875.3019392002. The cubic root of 6221313256 is about 1839.1932167180.

The spelling of 6221313256 in words is "six billion, two hundred twenty-one million, three hundred thirteen thousand, two hundred fifty-six".