648972208 has 40 divisors (see below), whose sum is σ = 1369220400. Its totient is φ = 296803584.

The previous prime is 648972199. The next prime is 648972241. The reversal of 648972208 is 802279846.

648972208 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, 27991 + ... + 45622.

It is an arithmetic number, because the mean of its divisors is an integer number (34230510).

Almost surely, 2^648972208 is an apocalyptic number.

It is an amenable number.

648972208 is an abundant number, since it is smaller than the sum of its proper divisors (720248192).

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

648972208 is a wasteful number, since it uses less digits than its factorization.

648972208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73669 (or 73663 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 648972208 is about 25474.9329341610. The cubic root of 648972208 is about 865.7822933946.

The spelling of 648972208 in words is "six hundred forty-eight million, nine hundred seventy-two thousand, two hundred eight".