648513708 has 48 divisors (see below), whose sum is σ = 1549062144. Its totient is φ = 211070080.

The previous prime is 648513673. The next prime is 648513713. The reversal of 648513708 is 807315846.

It is a self number, because there is not a number n which added to its sum of digits gives 648513708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292741 + ... + 294947.

It is an arithmetic number, because the mean of its divisors is an integer number (32272128).

Almost surely, 2^648513708 is an apocalyptic number.

It is an amenable number.

648513708 is an abundant number, since it is smaller than the sum of its proper divisors (900548436).

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

648513708 is a wasteful number, since it uses less digits than its factorization.

648513708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 648513708 is about 25465.9323018027. The cubic root of 648513708 is about 865.5783531241.

The spelling of 648513708 in words is "six hundred forty-eight million, five hundred thirteen thousand, seven hundred eight".