648614508 has 12 divisors (see below), whose sum is σ = 1513433880. Its totient is φ = 216204832.

The previous prime is 648614503. The next prime is 648614509. The reversal of 648614508 is 805416846.

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

It is a self number, because there is not a number n which added to its sum of digits gives 648614508.

It is not an unprimeable number, because it can be changed into a prime (648614503) 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 3 ways as a sum of consecutive naturals, for example, 27025593 + ... + 27025616.

It is an arithmetic number, because the mean of its divisors is an integer number (126119490).

Almost surely, 2^648614508 is an apocalyptic number.

It is an amenable number.

648614508 is an abundant number, since it is smaller than the sum of its proper divisors (864819372).

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

648614508 is a wasteful number, since it uses less digits than its factorization.

648614508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54051216 (or 54051214 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 648614508 is about 25467.9113395661. The cubic root of 648614508 is about 865.6231970890.

The spelling of 648614508 in words is "six hundred forty-eight million, six hundred fourteen thousand, five hundred eight".