648655884 has 24 divisors (see below), whose sum is σ = 1681700720. Its totient is φ = 216218592.

The previous prime is 648655837. The next prime is 648655897. The reversal of 648655884 is 488556846.

648655884 is a `hidden beast` number, since 6 + 4 + 8 + 6 + 558 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 648655884.

It is an unprimeable number.

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, 3002929 + ... + 3003144.

Almost surely, 2^648655884 is an apocalyptic number.

It is an amenable number.

648655884 is an abundant number, since it is smaller than the sum of its proper divisors (1033044836).

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

648655884 is a wasteful number, since it uses less digits than its factorization.

648655884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006086 (or 6006078 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The square root of 648655884 is about 25468.7236429311. The cubic root of 648655884 is about 865.6416031240.

The spelling of 648655884 in words is "six hundred forty-eight million, six hundred fifty-five thousand, eight hundred eighty-four".