648572722 has 48 divisors (see below), whose sum is σ = 1201158720. Its totient is φ = 261314592.

The previous prime is 648572711. The next prime is 648572753. The reversal of 648572722 is 227275846.

648572722 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 23 ways as a sum of consecutive naturals, for example, 130548 + ... + 135424.

It is an arithmetic number, because the mean of its divisors is an integer number (25024140).

Almost surely, 2^648572722 is an apocalyptic number.

648572722 is a deficient number, since it is larger than the sum of its proper divisors (552585998).

648572722 is a wasteful number, since it uses less digits than its factorization.

648572722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975 (or 4968 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The square root of 648572722 is about 25467.0909606889. The cubic root of 648572722 is about 865.6046078720.

The spelling of 648572722 in words is "six hundred forty-eight million, five hundred seventy-two thousand, seven hundred twenty-two".