198675565 has 8 divisors (see below), whose sum is σ = 260084448. Its totient is φ = 144491280.

The previous prime is 198675553. The next prime is 198675593. The reversal of 198675565 is 565576891.

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

It is not a de Polignac number, because 198675565 - 2²⁷ = 64457837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1806087 + ... + 1806196.

It is an arithmetic number, because the mean of its divisors is an integer number (32510556).

Almost surely, 2^198675565 is an apocalyptic number.

It is an amenable number.

198675565 is a deficient number, since it is larger than the sum of its proper divisors (61408883).

198675565 is a wasteful number, since it uses less digits than its factorization.

198675565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612299.

The product of its digits is 2268000, while the sum is 52.

The square root of 198675565 is about 14095.2319952529. The cubic root of 198675565 is about 583.5097971342.

The spelling of 198675565 in words is "one hundred ninety-eight million, six hundred seventy-five thousand, five hundred sixty-five".