689555582956 has 12 divisors (see below), whose sum is σ = 1215933891480. Its totient is φ = 342145899680.

The previous prime is 689555582953. The next prime is 689555583089. The reversal of 689555582956 is 659285555986.

It is not an unprimeable number, because it can be changed into a prime (689555582953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657972361 + ... + 657973408.

It is an arithmetic number, because the mean of its divisors is an integer number (101327824290).

Almost surely, 2^689555582956 is an apocalyptic number.

It is an amenable number.

689555582956 is a deficient number, since it is larger than the sum of its proper divisors (526378308524).

689555582956 is a wasteful number, since it uses less digits than its factorization.

689555582956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315945904 (or 1315945902 counting only the distinct ones).

The product of its digits is 1166400000, while the sum is 73.

The spelling of 689555582956 in words is "six hundred eighty-nine billion, five hundred fifty-five million, five hundred eighty-two thousand, nine hundred fifty-six".