648565446 has 24 divisors (see below), whose sum is σ = 1340335512. Its totient is φ = 209212800.

The previous prime is 648565387. The next prime is 648565447. The reversal of 648565446 is 644565846.

It is a junction number, because it is equal to n+sod(n) for n = 648565395 and 648565404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648565447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50475 + ... + 62006.

It is an arithmetic number, because the mean of its divisors is an integer number (55847313).

Almost surely, 2^648565446 is an apocalyptic number.

648565446 is an abundant number, since it is smaller than the sum of its proper divisors (691770066).

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

648565446 is a wasteful number, since it uses less digits than its factorization.

648565446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112548 (or 112517 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 48.

The square root of 648565446 is about 25466.9481092651. The cubic root of 648565446 is about 865.6013709372.

The spelling of 648565446 in words is "six hundred forty-eight million, five hundred sixty-five thousand, four hundred forty-six".