648536868 has 72 divisors (see below), whose sum is σ = 1942962112. Its totient is φ = 185294304.

The previous prime is 648536849. The next prime is 648536881. The reversal of 648536868 is 868635846.

648536868 is a `hidden beast` number, since 6 + 48 + 536 + 8 + 68 = 666.

648536868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40855 + ... + 54462.

Almost surely, 2^648536868 is an apocalyptic number.

It is an amenable number.

648536868 is an abundant number, since it is smaller than the sum of its proper divisors (1294425244).

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

648536868 is a wasteful number, since it uses less digits than its factorization.

648536868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95343 (or 95329 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The square root of 648536868 is about 25466.3870228975. The cubic root of 648536868 is about 865.5886569701.

The spelling of 648536868 in words is "six hundred forty-eight million, five hundred thirty-six thousand, eight hundred sixty-eight".