648672432 has 80 divisors (see below), whose sum is σ = 1720068480. Its totient is φ = 210574336.

The previous prime is 648672403. The next prime is 648672443. The reversal of 648672432 is 234276846.

648672432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319003 + ... + 321029.

It is an arithmetic number, because the mean of its divisors is an integer number (21500856).

Almost surely, 2^648672432 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 648672432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (860034240).

648672432 is an abundant number, since it is smaller than the sum of its proper divisors (1071396048).

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

648672432 is a wasteful number, since it uses less digits than its factorization.

648672432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210 (or 2204 counting only the distinct ones).

The product of its digits is 387072, while the sum is 42.

The square root of 648672432 is about 25469.0485099071. The cubic root of 648672432 is about 865.6489642512.

The spelling of 648672432 in words is "six hundred forty-eight million, six hundred seventy-two thousand, four hundred thirty-two".