689198 has 4 divisors (see below), whose sum is σ = 1033800. Its totient is φ = 344598.

The previous prime is 689167. The next prime is 689201. The reversal of 689198 is 891986.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 689198.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172298 + ... + 172301.

It is an arithmetic number, because the mean of its divisors is an integer number (258450).

2⁶⁸⁹¹⁹⁸ is an apocalyptic number.

689198 is a deficient number, since it is larger than the sum of its proper divisors (344602).

689198 is a wasteful number, since it uses less digits than its factorization.

689198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344601.

The product of its digits is 31104, while the sum is 41.

The square root of 689198 is about 830.1794986628. The cubic root of 689198 is about 88.3313096328.

The spelling of 689198 in words is "six hundred eighty-nine thousand, one hundred ninety-eight".