198077 has 6 divisors (see below), whose sum is σ = 217854. Its totient is φ = 179960.

The previous prime is 198073. The next prime is 198083. The reversal of 198077 is 770891.

It can be written as a sum of positive squares in only one way, i.e., 116281 + 81796 = 341^2 + 286^2 .

It is not a de Polignac number, because 198077 - 2² = 198073 is a prime.

It is a Duffinian 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 198077.

It is not an unprimeable number, because it can be changed into a prime (198073) 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, 698 + ... + 939.

It is an arithmetic number, because the mean of its divisors is an integer number (36309).

2¹⁹⁸⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

198077 is a deficient number, since it is larger than the sum of its proper divisors (19777).

198077 is a wasteful number, since it uses less digits than its factorization.

198077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 198077 is about 445.0584231312. The cubic root of 198077 is about 58.2923212861.

The spelling of 198077 in words is "one hundred ninety-eight thousand, seventy-seven".