198697 has 8 divisors (see below), whose sum is σ = 212544. Its totient is φ = 185328.

The previous prime is 198689. The next prime is 198701. The reversal of 198697 is 796891.

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

It is a cyclic number.

It is not a de Polignac number, because 198697 - 2³ = 198689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198637) 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, 1138 + ... + 1300.

It is an arithmetic number, because the mean of its divisors is an integer number (26568).

2¹⁹⁸⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

198697 is a deficient number, since it is larger than the sum of its proper divisors (13847).

198697 is a wasteful number, since it uses less digits than its factorization.

198697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239.

The product of its digits is 27216, while the sum is 40.

The square root of 198697 is about 445.7544166915. The cubic root of 198697 is about 58.3530781232.

The spelling of 198697 in words is "one hundred ninety-eight thousand, six hundred ninety-seven".