648349733 has 2 divisors, whose sum is σ = 648349734. Its totient is φ = 648349732.

The previous prime is 648349729. The next prime is 648349759. The reversal of 648349733 is 337943846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 629357569 + 18992164 = 25087^2 + 4358^2 .

It is a cyclic number.

It is not a de Polignac number, because 648349733 - 2² = 648349729 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648349033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324174866 + 324174867.

It is an arithmetic number, because the mean of its divisors is an integer number (324174867).

Almost surely, 2^648349733 is an apocalyptic number.

It is an amenable number.

648349733 is a deficient number, since it is larger than the sum of its proper divisors (1).

648349733 is an equidigital number, since it uses as much as digits as its factorization.

648349733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 47.

The square root of 648349733 is about 25462.7126009779. The cubic root of 648349733 is about 865.5053938981.

The spelling of 648349733 in words is "six hundred forty-eight million, three hundred forty-nine thousand, seven hundred thirty-three".