6226650821 has 2 divisors, whose sum is σ = 6226650822. Its totient is φ = 6226650820.

The previous prime is 6226650803. The next prime is 6226650889. The reversal of 6226650821 is 1280566226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6191958721 + 34692100 = 78689^2 + 5890^2 .

It is a cyclic number.

It is not a de Polignac number, because 6226650821 - 2¹⁰ = 6226649797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6226653821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3113325410 + 3113325411.

It is an arithmetic number, because the mean of its divisors is an integer number (3113325411).

Almost surely, 2^6226650821 is an apocalyptic number.

It is an amenable number.

6226650821 is a deficient number, since it is larger than the sum of its proper divisors (1).

6226650821 is an equidigital number, since it uses as much as digits as its factorization.

6226650821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 6226650821 is about 78909.1301498122. The cubic root of 6226650821 is about 1839.7190439207.

The spelling of 6226650821 in words is "six billion, two hundred twenty-six million, six hundred fifty thousand, eight hundred twenty-one".