648388323 has 24 divisors (see below), whose sum is σ = 1022688576. Its totient is φ = 392583600.

The previous prime is 648388303. The next prime is 648388327. The reversal of 648388323 is 323883846.

It is not a de Polignac number, because 648388323 - 2¹² = 648384227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648388327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126888 + ... + 131898.

It is an arithmetic number, because the mean of its divisors is an integer number (42612024).

Almost surely, 2^648388323 is an apocalyptic number.

648388323 is a deficient number, since it is larger than the sum of its proper divisors (374300253).

648388323 is a wasteful number, since it uses less digits than its factorization.

648388323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335 (or 6332 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 648388323 is about 25463.4703644260. The cubic root of 648388323 is about 865.5225652841.

The spelling of 648388323 in words is "six hundred forty-eight million, three hundred eighty-eight thousand, three hundred twenty-three".