648760518 has 24 divisors (see below), whose sum is σ = 1606454928. Its totient is φ = 185360112.

The previous prime is 648760513. The next prime is 648760523. The reversal of 648760518 is 815067846.

It is a happy number.

648760518 is a `hidden beast` number, since 64 + 8 + 76 + 0 + 518 = 666.

648760518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648760513) and next prime (648760523).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648760513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2574321 + ... + 2574572.

It is an arithmetic number, because the mean of its divisors is an integer number (66935622).

Almost surely, 2^648760518 is an apocalyptic number.

648760518 is an abundant number, since it is smaller than the sum of its proper divisors (957694410).

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

648760518 is a wasteful number, since it uses less digits than its factorization.

648760518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148908 (or 5148905 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 648760518 is about 25470.7777266420. Note that the first 4 decimals coincide. The cubic root of 648760518 is about 865.6881458677.

The spelling of 648760518 in words is "six hundred forty-eight million, seven hundred sixty thousand, five hundred eighteen".