648403488 has 192 divisors, whose sum is σ = 2006968320. Its totient is φ = 203233536.

The previous prime is 648403463. The next prime is 648403501. The reversal of 648403488 is 884304846.

It is a super-2 number, since 2×648403488² = 840854166501132288, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1331181 + ... + 1331667.

It is an arithmetic number, because the mean of its divisors is an integer number (10452960).

Almost surely, 2^648403488 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 648403488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003484160).

648403488 is an abundant number, since it is smaller than the sum of its proper divisors (1358564832).

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

648403488 is a wasteful number, since it uses less digits than its factorization.

648403488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The square root of 648403488 is about 25463.7681422055. The cubic root of 648403488 is about 865.5293130652.

The spelling of 648403488 in words is "six hundred forty-eight million, four hundred three thousand, four hundred eighty-eight".