648574049 has 2 divisors, whose sum is σ = 648574050. Its totient is φ = 648574048.

The previous prime is 648574027. The next prime is 648574093. The reversal of 648574049 is 940475846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588790225 + 59783824 = 24265^2 + 7732^2 .

It is a cyclic number.

It is not a de Polignac number, because 648574049 - 2¹² = 648569953 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 648573994 and 648574012.

It is not a weakly prime, because it can be changed into another prime (648574099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324287024 + 324287025.

It is an arithmetic number, because the mean of its divisors is an integer number (324287025).

Almost surely, 2^648574049 is an apocalyptic number.

It is an amenable number.

648574049 is a deficient number, since it is larger than the sum of its proper divisors (1).

648574049 is an equidigital number, since it uses as much as digits as its factorization.

648574049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 648574049 is about 25467.1170139064. The cubic root of 648574049 is about 865.6051982229.

The spelling of 648574049 in words is "six hundred forty-eight million, five hundred seventy-four thousand, forty-nine".