689633198 has 8 divisors (see below), whose sum is σ = 1036016760. Its totient is φ = 344294280.

The previous prime is 689633141. The next prime is 689633201. The reversal of 689633198 is 891336986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259508 + ... + 262151.

It is an arithmetic number, because the mean of its divisors is an integer number (129502095).

Almost surely, 2^689633198 is an apocalyptic number.

689633198 is a deficient number, since it is larger than the sum of its proper divisors (346383562).

689633198 is a wasteful number, since it uses less digits than its factorization.

689633198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522322.

The product of its digits is 1679616, while the sum is 53.

The square root of 689633198 is about 26260.8681882378. The cubic root of 689633198 is about 883.4989815687.

The spelling of 689633198 in words is "six hundred eighty-nine million, six hundred thirty-three thousand, one hundred ninety-eight".