648632748 has 12 divisors (see below), whose sum is σ = 1513476440. Its totient is φ = 216210912.

The previous prime is 648632737. The next prime is 648632767. The reversal of 648632748 is 847236846.

648632748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 648632697 and 648632706.

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, 27026353 + ... + 27026376.

Almost surely, 2^648632748 is an apocalyptic number.

It is an amenable number.

648632748 is an abundant number, since it is smaller than the sum of its proper divisors (864843692).

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

648632748 is a wasteful number, since it uses less digits than its factorization.

648632748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54052736 (or 54052734 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The square root of 648632748 is about 25468.2694347300. The cubic root of 648632748 is about 865.6313112148.

The spelling of 648632748 in words is "six hundred forty-eight million, six hundred thirty-two thousand, seven hundred forty-eight".