689880212 has 18 divisors (see below), whose sum is σ = 1404399402. Its totient is φ = 295662864.

The previous prime is 689880211. The next prime is 689880223. The reversal of 689880212 is 212088986.

689880212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 688327696 + 1552516 = 26236^2 + 1246^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689880211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1759703 + ... + 1760094.

It is an arithmetic number, because the mean of its divisors is an integer number (78022189).

Almost surely, 2^689880212 is an apocalyptic number.

It is an amenable number.

689880212 is an abundant number, since it is smaller than the sum of its proper divisors (714519190).

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

689880212 is a wasteful number, since it uses less digits than its factorization.

689880212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519815 (or 3519806 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 689880212 is about 26265.5708485462. The cubic root of 689880212 is about 883.6044533698.

The spelling of 689880212 in words is "six hundred eighty-nine million, eight hundred eighty thousand, two hundred twelve".