648756328 has 32 divisors (see below), whose sum is σ = 1328218560. Its totient is φ = 294618880.

The previous prime is 648756307. The next prime is 648756343. The reversal of 648756328 is 823657846.

648756328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117600 + ... + 122992.

It is an arithmetic number, because the mean of its divisors is an integer number (41506830).

Almost surely, 2^648756328 is an apocalyptic number.

It is an amenable number.

648756328 is an abundant number, since it is smaller than the sum of its proper divisors (679462232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648756328 is a wasteful number, since it uses less digits than its factorization.

648756328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6777 (or 6773 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 648756328 is about 25470.6954753890. The cubic root of 648756328 is about 865.6862821902.

The spelling of 648756328 in words is "six hundred forty-eight million, seven hundred fifty-six thousand, three hundred twenty-eight".