648847408 has 40 divisors (see below), whose sum is σ = 1400624640. Its totient is φ = 288651840.

The previous prime is 648847403. The next prime is 648847447. The reversal of 648847408 is 804748846.

It is not an unprimeable number, because it can be changed into a prime (648847403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30948 + ... + 47491.

It is an arithmetic number, because the mean of its divisors is an integer number (35015616).

Almost surely, 2^648847408 is an apocalyptic number.

It is an amenable number.

648847408 is an abundant number, since it is smaller than the sum of its proper divisors (751777232).

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

648847408 is a wasteful number, since it uses less digits than its factorization.

648847408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78505 (or 78499 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 49.

The square root of 648847408 is about 25472.4833496854. The cubic root of 648847408 is about 865.7267920158.

The spelling of 648847408 in words is "six hundred forty-eight million, eight hundred forty-seven thousand, four hundred eight".