198006223 has 4 divisors (see below), whose sum is σ = 198062920. Its totient is φ = 197949528.

The previous prime is 198006209. The next prime is 198006233. The reversal of 198006223 is 322600891.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198006223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198006233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22740 + ... + 30217.

It is an arithmetic number, because the mean of its divisors is an integer number (49515730).

Almost surely, 2^198006223 is an apocalyptic number.

198006223 is a deficient number, since it is larger than the sum of its proper divisors (56697).

198006223 is an equidigital number, since it uses as much as digits as its factorization.

198006223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56696.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 198006223 is about 14071.4684024092. The cubic root of 198006223 is about 582.8537744245.

The spelling of 198006223 in words is "one hundred ninety-eight million, six thousand, two hundred twenty-three".