648672560 has 40 divisors (see below), whose sum is σ = 1530686256. Its totient is φ = 255594240.

The previous prime is 648672533. The next prime is 648672581. The reversal of 648672560 is 65276846.

648672560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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, 55151 + ... + 65870.

Almost surely, 2^648672560 is an apocalyptic number.

It is an amenable number.

648672560 is an abundant number, since it is smaller than the sum of its proper divisors (882013696).

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

648672560 is a wasteful number, since it uses less digits than its factorization.

648672560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121101 (or 121095 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 648672560 is about 25469.0510227609. The cubic root of 648672560 is about 865.6490211895.

The spelling of 648672560 in words is "six hundred forty-eight million, six hundred seventy-two thousand, five hundred sixty".