648276608 has 64 divisors (see below), whose sum is σ = 1491403200. Its totient is φ = 274931712.

The previous prime is 648276583. The next prime is 648276613. The reversal of 648276608 is 806672846.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 83183 + ... + 90641.

It is an arithmetic number, because the mean of its divisors is an integer number (23303175).

Almost surely, 2^648276608 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 648276608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745701600).

648276608 is an abundant number, since it is smaller than the sum of its proper divisors (843126592).

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

648276608 is an equidigital number, since it uses as much as digits as its factorization.

648276608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577 (or 7565 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 648276608 is about 25461.2766372780. The cubic root of 648276608 is about 865.4728536099.

The spelling of 648276608 in words is "six hundred forty-eight million, two hundred seventy-six thousand, six hundred eight".