648812108 has 12 divisors (see below), whose sum is σ = 1297624272. Its totient is φ = 278062320.

The previous prime is 648812071. The next prime is 648812117. The reversal of 648812108 is 801218846.

648812108 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11585903 + ... + 11585958.

It is an arithmetic number, because the mean of its divisors is an integer number (108135356).

Almost surely, 2^648812108 is an apocalyptic number.

It is an amenable number.

648812108 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

648812108 is a wasteful number, since it uses less digits than its factorization.

648812108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23171872 (or 23171870 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 648812108 is about 25471.7904356957. The cubic root of 648812108 is about 865.7110920173.

The spelling of 648812108 in words is "six hundred forty-eight million, eight hundred twelve thousand, one hundred eight".