648746017 has 2 divisors, whose sum is σ = 648746018. Its totient is φ = 648746016.

The previous prime is 648746003. The next prime is 648746039. The reversal of 648746017 is 710647846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614593681 + 34152336 = 24791^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 648746017 - 2¹⁵ = 648713249 is a prime.

It is not a weakly prime, because it can be changed into another prime (648746047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324373008 + 324373009.

It is an arithmetic number, because the mean of its divisors is an integer number (324373009).

Almost surely, 2^648746017 is an apocalyptic number.

It is an amenable number.

648746017 is a deficient number, since it is larger than the sum of its proper divisors (1).

648746017 is an equidigital number, since it uses as much as digits as its factorization.

648746017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 648746017 is about 25470.4930655062. The cubic root of 648746017 is about 865.6816959081.

The spelling of 648746017 in words is "six hundred forty-eight million, seven hundred forty-six thousand, seventeen".