8220470647 has 2 divisors, whose sum is σ = 8220470648. Its totient is φ = 8220470646.

The previous prime is 8220470639. The next prime is 8220470659. The reversal of 8220470647 is 7460740228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8220470647 - 2³ = 8220470639 is a prime.

It is a super-2 number, since 2×8220470647² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8220470627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110235323 + 4110235324.

It is an arithmetic number, because the mean of its divisors is an integer number (4110235324).

Almost surely, 2^8220470647 is an apocalyptic number.

8220470647 is a deficient number, since it is larger than the sum of its proper divisors (1).

8220470647 is an equidigital number, since it uses as much as digits as its factorization.

8220470647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 8220470647 is about 90666.8111659388. The cubic root of 8220470647 is about 2018.2063160409.

The spelling of 8220470647 in words is "eight billion, two hundred twenty million, four hundred seventy thousand, six hundred forty-seven".