648713632 has 48 divisors (see below), whose sum is σ = 1470329280. Its totient is φ = 275977728.

The previous prime is 648713629. The next prime is 648713633. The reversal of 648713632 is 236317846.

It is not an unprimeable number, because it can be changed into a prime (648713633) 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, 20119 + ... + 41257.

It is an arithmetic number, because the mean of its divisors is an integer number (30631860).

Almost surely, 2^648713632 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 648713632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735164640).

648713632 is an abundant number, since it is smaller than the sum of its proper divisors (821615648).

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

648713632 is a wasteful number, since it uses less digits than its factorization.

648713632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21293 (or 21285 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 648713632 is about 25469.8573219404. The cubic root of 648713632 is about 865.6672909034.

The spelling of 648713632 in words is "six hundred forty-eight million, seven hundred thirteen thousand, six hundred thirty-two".