6289970221 has 2 divisors, whose sum is σ = 6289970222. Its totient is φ = 6289970220.

The previous prime is 6289970177. The next prime is 6289970237. The reversal of 6289970221 is 1220799826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3293612100 + 2996358121 = 57390^2 + 54739^2 .

It is a cyclic number.

It is not a de Polignac number, because 6289970221 - 2¹⁵ = 6289937453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6289970261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3144985110 + 3144985111.

It is an arithmetic number, because the mean of its divisors is an integer number (3144985111).

Almost surely, 2^6289970221 is an apocalyptic number.

It is an amenable number.

6289970221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6289970221 is an equidigital number, since it uses as much as digits as its factorization.

6289970221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 6289970221 is about 79309.3324962454. The cubic root of 6289970221 is about 1845.9341162782.

The spelling of 6289970221 in words is "six billion, two hundred eighty-nine million, nine hundred seventy thousand, two hundred twenty-one".