648343432 has 64 divisors (see below), whose sum is σ = 1347373440. Its totient is φ = 290035200.

The previous prime is 648343391. The next prime is 648343439. The reversal of 648343432 is 234343846.

648343432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 648343391 and 648343400.

It is not an unprimeable number, because it can be changed into a prime (648343439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2307132 + ... + 2307412.

It is an arithmetic number, because the mean of its divisors is an integer number (21052710).

Almost surely, 2^648343432 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 648343432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673686720).

648343432 is an abundant number, since it is smaller than the sum of its proper divisors (699030008).

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

648343432 is a wasteful number, since it uses less digits than its factorization.

648343432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 618 counting only the distinct ones).

The product of its digits is 165888, while the sum is 37.

The square root of 648343432 is about 25462.5888707335. The cubic root of 648343432 is about 865.5025900785.

The spelling of 648343432 in words is "six hundred forty-eight million, three hundred forty-three thousand, four hundred thirty-two".