648727812 has 48 divisors (see below), whose sum is σ = 1690655680. Its totient is φ = 215115264.

The previous prime is 648727801. The next prime is 648727829. The reversal of 648727812 is 218727846.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5283 + ... + 36405.

Almost surely, 2^648727812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648727812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845327840).

648727812 is an abundant number, since it is smaller than the sum of its proper divisors (1041927868).

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

648727812 is a wasteful number, since it uses less digits than its factorization.

648727812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31329 (or 31321 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 648727812 is about 25470.1356886845. The cubic root of 648727812 is about 865.6735982950.

The spelling of 648727812 in words is "six hundred forty-eight million, seven hundred twenty-seven thousand, eight hundred twelve".