8605520321 has 2 divisors, whose sum is σ = 8605520322. Its totient is φ = 8605520320.

The previous prime is 8605520293. The next prime is 8605520327. The reversal of 8605520321 is 1230255068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6783169600 + 1822350721 = 82360^2 + 42689^2 .

It is a cyclic number.

It is not a de Polignac number, because 8605520321 - 2¹⁴ = 8605503937 is a prime.

It is not a weakly prime, because it can be changed into another prime (8605520327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4302760160 + 4302760161.

It is an arithmetic number, because the mean of its divisors is an integer number (4302760161).

Almost surely, 2^8605520321 is an apocalyptic number.

It is an amenable number.

8605520321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8605520321 is an equidigital number, since it uses as much as digits as its factorization.

8605520321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 8605520321 is about 92765.9437563161. The cubic root of 8605520321 is about 2049.2378940701.

Adding to 8605520321 its reverse (1230255068), we get a palindrome (9835775389).

The spelling of 8605520321 in words is "eight billion, six hundred five million, five hundred twenty thousand, three hundred twenty-one".