682688668664 has 16 divisors (see below), whose sum is σ = 1293237556800. Its totient is φ = 337825320192.

The previous prime is 682688668637. The next prime is 682688668687. The reversal of 682688668664 is 466866886286.

It is a junction number, because it is equal to n+sod(n) for n = 682688668591 and 682688668600.

It is a congruent number.

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, 439875944 + ... + 439877495.

It is an arithmetic number, because the mean of its divisors is an integer number (80827347300).

Almost surely, 2^682688668664 is an apocalyptic number.

It is an amenable number.

682688668664 is a deficient number, since it is larger than the sum of its proper divisors (610548888136).

682688668664 is a wasteful number, since it uses less digits than its factorization.

682688668664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879753542 (or 879753538 counting only the distinct ones).

The product of its digits is 1528823808, while the sum is 74.

The spelling of 682688668664 in words is "six hundred eighty-two billion, six hundred eighty-eight million, six hundred sixty-eight thousand, six hundred sixty-four".