648727872 has 56 divisors (see below), whose sum is σ = 1848465696. Its totient is φ = 199607808.

The previous prime is 648727867. The next prime is 648727879. The reversal of 648727872 is 278727846.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648727879) by changing a digit.

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, 127458 + ... + 132449.

It is an arithmetic number, because the mean of its divisors is an integer number (33008316).

Almost surely, 2^648727872 is an apocalyptic number.

It is an amenable number.

648727872 is an abundant number, since it is smaller than the sum of its proper divisors (1199737824).

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

648727872 is a wasteful number, since it uses less digits than its factorization.

648727872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259935 (or 259925 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 51.

The square root of 648727872 is about 25470.1368665345. The cubic root of 648727872 is about 865.6736249834.

The spelling of 648727872 in words is "six hundred forty-eight million, seven hundred twenty-seven thousand, eight hundred seventy-two".