648635548 has 12 divisors (see below), whose sum is σ = 1238304312. Its totient is φ = 294834320.

The previous prime is 648635501. The next prime is 648635551. The reversal of 648635548 is 845536846.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7370815 + ... + 7370902.

It is an arithmetic number, because the mean of its divisors is an integer number (103192026).

Almost surely, 2^648635548 is an apocalyptic number.

It is an amenable number.

648635548 is a deficient number, since it is larger than the sum of its proper divisors (589668764).

648635548 is a wasteful number, since it uses less digits than its factorization.

648635548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14741732 (or 14741730 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 49.

The square root of 648635548 is about 25468.3244050330. The cubic root of 648635548 is about 865.6325567908.

The spelling of 648635548 in words is "six hundred forty-eight million, six hundred thirty-five thousand, five hundred forty-eight".