648484842 has 64 divisors (see below), whose sum is σ = 1349944704. Its totient is φ = 207590400.

The previous prime is 648484841. The next prime is 648484853. The reversal of 648484842 is 248484846.

It is a junction number, because it is equal to n+sod(n) for n = 648484791 and 648484800.

It is not an unprimeable number, because it can be changed into a prime (648484841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4733398 + ... + 4733534.

It is an arithmetic number, because the mean of its divisors is an integer number (21092886).

Almost surely, 2^648484842 is an apocalyptic number.

648484842 is an abundant number, since it is smaller than the sum of its proper divisors (701459862).

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

648484842 is a wasteful number, since it uses less digits than its factorization.

648484842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its digits is 1572864, while the sum is 48.

The square root of 648484842 is about 25465.3655383150. The cubic root of 648484842 is about 865.5655103447.

The spelling of 648484842 in words is "six hundred forty-eight million, four hundred eighty-four thousand, eight hundred forty-two".