8065485221 has 2 divisors, whose sum is σ = 8065485222. Its totient is φ = 8065485220.

The previous prime is 8065485121. The next prime is 8065485271. The reversal of 8065485221 is 1225845608.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7188496225 + 876988996 = 84785^2 + 29614^2 .

It is a cyclic number.

It is not a de Polignac number, because 8065485221 - 2¹⁴ = 8065468837 is a prime.

It is a super-3 number, since 3×8065485221³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8065485271) 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, 4032742610 + 4032742611.

It is an arithmetic number, because the mean of its divisors is an integer number (4032742611).

Almost surely, 2^8065485221 is an apocalyptic number.

It is an amenable number.

8065485221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8065485221 is an equidigital number, since it uses as much as digits as its factorization.

8065485221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 8065485221 is about 89808.0465270234. The cubic root of 8065485221 is about 2005.4422791164.

The spelling of 8065485221 in words is "eight billion, sixty-five million, four hundred eighty-five thousand, two hundred twenty-one".