648927269 has 2 divisors, whose sum is σ = 648927270. Its totient is φ = 648927268.

The previous prime is 648927161. The next prime is 648927289. The reversal of 648927269 is 962729846.

648927269 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., 626250625 + 22676644 = 25025^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 648927269 - 2²⁴ = 632150053 is a prime.

It is a super-2 number, since 2×648927269² = 842213200903596722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648927269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648927289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324463634 + 324463635.

It is an arithmetic number, because the mean of its divisors is an integer number (324463635).

Almost surely, 2^648927269 is an apocalyptic number.

It is an amenable number.

648927269 is a deficient number, since it is larger than the sum of its proper divisors (1).

648927269 is an equidigital number, since it uses as much as digits as its factorization.

648927269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The square root of 648927269 is about 25474.0508949794. The cubic root of 648927269 is about 865.7623088261.

The spelling of 648927269 in words is "six hundred forty-eight million, nine hundred twenty-seven thousand, two hundred sixty-nine".