648973330 has 16 divisors (see below), whose sum is σ = 1169022744. Its totient is φ = 259395840.

The previous prime is 648973309. The next prime is 648973337. The reversal of 648973330 is 33379846.

It can be written as a sum of positive squares in 4 ways, for example, as 329386201 + 319587129 = 18149^2 + 17877^2 .

It is not an unprimeable number, because it can be changed into a prime (648973337) 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 7 ways as a sum of consecutive naturals, for example, 9687 + ... + 37306.

Almost surely, 2^648973330 is an apocalyptic number.

648973330 is a deficient number, since it is larger than the sum of its proper divisors (520049414).

648973330 is a wasteful number, since it uses less digits than its factorization.

648973330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48381.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 648973330 is about 25474.9549557992. The cubic root of 648973330 is about 865.7827923410.

The spelling of 648973330 in words is "six hundred forty-eight million, nine hundred seventy-three thousand, three hundred thirty".