685504648 has 16 divisors (see below), whose sum is σ = 1352970000. Its totient is φ = 324712656.

The previous prime is 685504637. The next prime is 685504663. The reversal of 685504648 is 846405586.

685504648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 685504598 and 685504607.

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, 2254798 + ... + 2255101.

It is an arithmetic number, because the mean of its divisors is an integer number (84560625).

Almost surely, 2^685504648 is an apocalyptic number.

It is an amenable number.

685504648 is a deficient number, since it is larger than the sum of its proper divisors (667465352).

685504648 is a wasteful number, since it uses less digits than its factorization.

685504648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4509924 (or 4509920 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The square root of 685504648 is about 26182.1436861079. The cubic root of 685504648 is about 881.7324033987.

The spelling of 685504648 in words is "six hundred eighty-five million, five hundred four thousand, six hundred forty-eight".