648748422 has 48 divisors (see below), whose sum is σ = 1611136800. Its totient is φ = 184813056.

The previous prime is 648748411. The next prime is 648748423. The reversal of 648748422 is 224847846.

648748422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648748423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36598 + ... + 51350.

It is an arithmetic number, because the mean of its divisors is an integer number (33565350).

Almost surely, 2^648748422 is an apocalyptic number.

648748422 is an abundant number, since it is smaller than the sum of its proper divisors (962388378).

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

648748422 is a wasteful number, since it uses less digits than its factorization.

648748422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15117 (or 15114 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 648748422 is about 25470.5402769553. The cubic root of 648748422 is about 865.6827656446.

The spelling of 648748422 in words is "six hundred forty-eight million, seven hundred forty-eight thousand, four hundred twenty-two".