647448017 has 2 divisors, whose sum is σ = 647448018. Its totient is φ = 647448016.

The previous prime is 647447993. The next prime is 647448037. The reversal of 647448017 is 710844746.

647448017 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., 634838416 + 12609601 = 25196^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 647448017 - 2¹⁸ = 647185873 is a prime.

It is a Chen prime.

It is equal to p_33667628 and since 647448017 and 33667628 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (647448037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323724008 + 323724009.

It is an arithmetic number, because the mean of its divisors is an integer number (323724009).

Almost surely, 2^647448017 is an apocalyptic number.

It is an amenable number.

647448017 is a deficient number, since it is larger than the sum of its proper divisors (1).

647448017 is an equidigital number, since it uses as much as digits as its factorization.

647448017 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 41.

The square root of 647448017 is about 25444.9998427982. Note that the first 3 decimals coincide. The cubic root of 647448017 is about 865.1039633582.

The spelling of 647448017 in words is "six hundred forty-seven million, four hundred forty-eight thousand, seventeen".