198674417 has 4 divisors (see below), whose sum is σ = 202041840. Its totient is φ = 195306996.

The previous prime is 198674387. The next prime is 198674419. The reversal of 198674417 is 714476891.

It is a happy number.

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 198674417 - 2⁶ = 198674353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198674419) 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, 1683623 + ... + 1683740.

It is an arithmetic number, because the mean of its divisors is an integer number (50510460).

Almost surely, 2^198674417 is an apocalyptic number.

It is an amenable number.

198674417 is a deficient number, since it is larger than the sum of its proper divisors (3367423).

198674417 is an equidigital number, since it uses as much as digits as its factorization.

198674417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367422.

The product of its digits is 338688, while the sum is 47.

The square root of 198674417 is about 14095.1912722034. The cubic root of 198674417 is about 583.5086732407.

The spelling of 198674417 in words is "one hundred ninety-eight million, six hundred seventy-four thousand, four hundred seventeen".