648076433 has 2 divisors, whose sum is σ = 648076434. Its totient is φ = 648076432.

The previous prime is 648076411. The next prime is 648076441. The reversal of 648076433 is 334670846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 524043664 + 124032769 = 22892^2 + 11137^2 .

It is a cyclic number.

It is not a de Polignac number, because 648076433 - 2¹⁸ = 647814289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (648076333) 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, 324038216 + 324038217.

It is an arithmetic number, because the mean of its divisors is an integer number (324038217).

Almost surely, 2^648076433 is an apocalyptic number.

It is an amenable number.

648076433 is a deficient number, since it is larger than the sum of its proper divisors (1).

648076433 is an equidigital number, since it uses as much as digits as its factorization.

648076433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 648076433 is about 25457.3453643541. The cubic root of 648076433 is about 865.3837641374.

The spelling of 648076433 in words is "six hundred forty-eight million, seventy-six thousand, four hundred thirty-three".