648324739 has 2 divisors, whose sum is σ = 648324740. Its totient is φ = 648324738.

The previous prime is 648324709. The next prime is 648324751. The reversal of 648324739 is 937423846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648324739 - 2¹⁵ = 648291971 is a prime.

It is not a weakly prime, because it can be changed into another prime (648324709) 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, 324162369 + 324162370.

It is an arithmetic number, because the mean of its divisors is an integer number (324162370).

Almost surely, 2^648324739 is an apocalyptic number.

648324739 is a deficient number, since it is larger than the sum of its proper divisors (1).

648324739 is an equidigital number, since it uses as much as digits as its factorization.

648324739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The square root of 648324739 is about 25462.2218001493. The cubic root of 648324739 is about 865.4942719585.

The spelling of 648324739 in words is "six hundred forty-eight million, three hundred twenty-four thousand, seven hundred thirty-nine".