648860082004 has 12 divisors (see below), whose sum is σ = 1135512387828. Its totient is φ = 324427971200.

The previous prime is 648860081993. The next prime is 648860082011. The reversal of 648860082004 is 400280068846.

It can be written as a sum of positive squares in 2 ways, for example, as 332905920400 + 315954161604 = 576980^2 + 562098^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349164 + ... + 1191484.

It is an arithmetic number, because the mean of its divisors is an integer number (94626032319).

Almost surely, 2^648860082004 is an apocalyptic number.

It is an amenable number.

648860082004 is a deficient number, since it is larger than the sum of its proper divisors (486652305824).

648860082004 is a wasteful number, since it uses less digits than its factorization.

648860082004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034906 (or 1034904 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 648860082004 in words is "six hundred forty-eight billion, eight hundred sixty million, eighty-two thousand, four".