689207816 has 32 divisors (see below), whose sum is σ = 1412964000. Its totient is φ = 312560640.

The previous prime is 689207809. The next prime is 689207839. The reversal of 689207816 is 618702986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30791 + ... + 48233.

It is an arithmetic number, because the mean of its divisors is an integer number (44155125).

Almost surely, 2^689207816 is an apocalyptic number.

It is an amenable number.

689207816 is an abundant number, since it is smaller than the sum of its proper divisors (723756184).

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

689207816 is a wasteful number, since it uses less digits than its factorization.

689207816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17909 (or 17905 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 689207816 is about 26252.7677778934. The cubic root of 689207816 is about 883.3172898791.

The spelling of 689207816 in words is "six hundred eighty-nine million, two hundred seven thousand, eight hundred sixteen".