648728323 has 2 divisors, whose sum is σ = 648728324. Its totient is φ = 648728322.

The previous prime is 648728309. The next prime is 648728359. The reversal of 648728323 is 323827846.

648728323 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 is a cyclic number.

It is not a de Polignac number, because 648728323 - 2²⁹ = 111857411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648728323.

It is not a weakly prime, because it can be changed into another prime (648728303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324364161 + 324364162.

It is an arithmetic number, because the mean of its divisors is an integer number (324364162).

Almost surely, 2^648728323 is an apocalyptic number.

648728323 is a deficient number, since it is larger than the sum of its proper divisors (1).

648728323 is an equidigital number, since it uses as much as digits as its factorization.

648728323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 43.

The square root of 648728323 is about 25470.1457200386. The cubic root of 648728323 is about 865.6738255907.

The spelling of 648728323 in words is "six hundred forty-eight million, seven hundred twenty-eight thousand, three hundred twenty-three".