198693673 has 4 divisors (see below), whose sum is σ = 199294288. Its totient is φ = 198093060.

The previous prime is 198693647. The next prime is 198693679. The reversal of 198693673 is 376396891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198693673 - 2⁵ = 198693641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198693673.

It is not an unprimeable number, because it can be changed into a prime (198693679) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 299811 + ... + 300472.

It is an arithmetic number, because the mean of its divisors is an integer number (49823572).

Almost surely, 2^198693673 is an apocalyptic number.

It is an amenable number.

198693673 is a deficient number, since it is larger than the sum of its proper divisors (600615).

198693673 is an equidigital number, since it uses as much as digits as its factorization.

198693673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600614.

The product of its digits is 1469664, while the sum is 52.

The square root of 198693673 is about 14095.8743254897. The cubic root of 198693673 is about 583.5275243174.

It can be divided in two parts, 1986 and 93673, that added together give a palindrome (95659).

The spelling of 198693673 in words is "one hundred ninety-eight million, six hundred ninety-three thousand, six hundred seventy-three".