648748433 has 2 divisors, whose sum is σ = 648748434. Its totient is φ = 648748432.

The previous prime is 648748423. The next prime is 648748459. The reversal of 648748433 is 334847846.

648748433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591851584 + 56896849 = 24328^2 + 7543^2 .

It is a cyclic number.

It is not a de Polignac number, because 648748433 - 2²² = 644554129 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (648748423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324374216 + 324374217.

It is an arithmetic number, because the mean of its divisors is an integer number (324374217).

Almost surely, 2^648748433 is an apocalyptic number.

It is an amenable number.

648748433 is a deficient number, since it is larger than the sum of its proper divisors (1).

648748433 is an equidigital number, since it uses as much as digits as its factorization.

648748433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 47.

The square root of 648748433 is about 25470.5404928910. The cubic root of 648748433 is about 865.6827705374.

The spelling of 648748433 in words is "six hundred forty-eight million, seven hundred forty-eight thousand, four hundred thirty-three".