689565012 has 24 divisors (see below), whose sum is σ = 1643220096. Its totient is φ = 224964288.

The previous prime is 689565011. The next prime is 689565013. The reversal of 689565012 is 210565986.

689565012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (689565011) and next prime (689565013).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689565011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610753 + ... + 611880.

It is an arithmetic number, because the mean of its divisors is an integer number (68467504).

Almost surely, 2^689565012 is an apocalyptic number.

It is an amenable number.

689565012 is an abundant number, since it is smaller than the sum of its proper divisors (953655084).

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

689565012 is a wasteful number, since it uses less digits than its factorization.

689565012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222687 (or 1222685 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 689565012 is about 26259.5699127004. The cubic root of 689565012 is about 883.4698625881.

The spelling of 689565012 in words is "six hundred eighty-nine million, five hundred sixty-five thousand, twelve".