648323530 has 8 divisors (see below), whose sum is σ = 1166982372. Its totient is φ = 259329408.

The previous prime is 648323519. The next prime is 648323531. The reversal of 648323530 is 35323846.

It can be written as a sum of positive squares in 2 ways, for example, as 648262521 + 61009 = 25461^2 + 247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (648323531) 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 in 3 ways as a sum of consecutive naturals, for example, 32416167 + ... + 32416186.

Almost surely, 2^648323530 is an apocalyptic number.

648323530 is a deficient number, since it is larger than the sum of its proper divisors (518658842).

648323530 is a wasteful number, since it uses less digits than its factorization.

648323530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64832360.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 648323530 is about 25462.1980590836. The cubic root of 648323530 is about 865.4937339651.

The spelling of 648323530 in words is "six hundred forty-eight million, three hundred twenty-three thousand, five hundred thirty".