648442422 has 40 divisors (see below), whose sum is σ = 1467414432. Its totient is φ = 214002000.

The previous prime is 648442411. The next prime is 648442423. The reversal of 648442422 is 224244846.

It is a happy number.

648442422 is a `hidden beast` number, since 648 + 4 + 4 + 2 + 4 + 2 + 2 = 666.

648442422 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 (648442423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3454 + ... + 36177.

Almost surely, 2^648442422 is an apocalyptic number.

648442422 is an abundant number, since it is smaller than the sum of its proper divisors (818972010).

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

648442422 is a wasteful number, since it uses less digits than its factorization.

648442422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39746 (or 39737 counting only the distinct ones).

The product of its digits is 98304, while the sum is 36.

The square root of 648442422 is about 25464.5326287368. The cubic root of 648442422 is about 865.5466365602.

The spelling of 648442422 in words is "six hundred forty-eight million, four hundred forty-two thousand, four hundred twenty-two".