6266487221 has 2 divisors, whose sum is σ = 6266487222. Its totient is φ = 6266487220.

The previous prime is 6266487211. The next prime is 6266487251. The reversal of 6266487221 is 1227846626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5911918321 + 354568900 = 76889^2 + 18830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6266487221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6266487211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3133243610 + 3133243611.

It is an arithmetic number, because the mean of its divisors is an integer number (3133243611).

Almost surely, 2^6266487221 is an apocalyptic number.

It is an amenable number.

6266487221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6266487221 is an equidigital number, since it uses as much as digits as its factorization.

6266487221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 6266487221 is about 79161.1471682921. The cubic root of 6266487221 is about 1843.6340455952.

The spelling of 6266487221 in words is "six billion, two hundred sixty-six million, four hundred eighty-seven thousand, two hundred twenty-one".