8650956221 has 2 divisors, whose sum is σ = 8650956222. Its totient is φ = 8650956220.

The previous prime is 8650956203. The next prime is 8650956233. The reversal of 8650956221 is 1226590568.

8650956221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6510876100 + 2140080121 = 80690^2 + 46261^2 .

It is a cyclic number.

It is not a de Polignac number, because 8650956221 - 2²⁶ = 8583847357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8650955221) 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, 4325478110 + 4325478111.

It is an arithmetic number, because the mean of its divisors is an integer number (4325478111).

Almost surely, 2^8650956221 is an apocalyptic number.

It is an amenable number.

8650956221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8650956221 is an equidigital number, since it uses as much as digits as its factorization.

8650956221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 8650956221 is about 93010.5167225728. The cubic root of 8650956221 is about 2052.8381249397.

The spelling of 8650956221 in words is "eight billion, six hundred fifty million, nine hundred fifty-six thousand, two hundred twenty-one".