648481782 has 16 divisors (see below), whose sum is σ = 1396730160. Its totient is φ = 199532832.

The previous prime is 648481751. The next prime is 648481817. The reversal of 648481782 is 287184846.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4156857 + ... + 4157012.

It is an arithmetic number, because the mean of its divisors is an integer number (87295635).

Almost surely, 2^648481782 is an apocalyptic number.

648481782 is an abundant number, since it is smaller than the sum of its proper divisors (748248378).

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

648481782 is a wasteful number, since it uses less digits than its factorization.

648481782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8313887.

The product of its digits is 688128, while the sum is 48.

The square root of 648481782 is about 25465.3054566404. The cubic root of 648481782 is about 865.5641488970.

The spelling of 648481782 in words is "six hundred forty-eight million, four hundred eighty-one thousand, seven hundred eighty-two".