648716888 has 8 divisors (see below), whose sum is σ = 1216344180. Its totient is φ = 324358440.

The previous prime is 648716869. The next prime is 648716897. The reversal of 648716888 is 888617846.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 40544798 + ... + 40544813.

Almost surely, 2^648716888 is an apocalyptic number.

It is an amenable number.

648716888 is a deficient number, since it is larger than the sum of its proper divisors (567627292).

648716888 is a wasteful number, since it uses less digits than its factorization.

648716888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81089617 (or 81089613 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 56.

The square root of 648716888 is about 25469.9212405535. The cubic root of 648716888 is about 865.6687392097.

The spelling of 648716888 in words is "six hundred forty-eight million, seven hundred sixteen thousand, eight hundred eighty-eight".