689289735688 has 16 divisors (see below), whose sum is σ = 1292431542480. Its totient is φ = 344641324368.

The previous prime is 689289735637. The next prime is 689289735707. The reversal of 689289735688 is 886537982986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502495 + ... + 1277137.

It is an arithmetic number, because the mean of its divisors is an integer number (80776971405).

Almost surely, 2^689289735688 is an apocalyptic number.

It is an amenable number.

689289735688 is a deficient number, since it is larger than the sum of its proper divisors (603141806792).

689289735688 is a wasteful number, since it uses less digits than its factorization.

689289735688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885876 (or 885872 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 79.

The spelling of 689289735688 in words is "six hundred eighty-nine billion, two hundred eighty-nine million, seven hundred thirty-five thousand, six hundred eighty-eight".