689880198 has 32 divisors (see below), whose sum is σ = 1592188416. Its totient is φ = 195193728.

The previous prime is 689880187. The next prime is 689880211. The reversal of 689880198 is 891088986.

689880198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75411 + ... + 84062.

It is an arithmetic number, because the mean of its divisors is an integer number (49755888).

Almost surely, 2^689880198 is an apocalyptic number.

689880198 is an abundant number, since it is smaller than the sum of its proper divisors (902308218).

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

689880198 is a wasteful number, since it uses less digits than its factorization.

689880198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159588.

The product of its (nonzero) digits is 1990656, while the sum is 57.

The square root of 689880198 is about 26265.5705820376. The cubic root of 689880198 is about 883.6044473927.

The spelling of 689880198 in words is "six hundred eighty-nine million, eight hundred eighty thousand, one hundred ninety-eight".