198566346 has 128 divisors (see below), whose sum is σ = 477683712. Its totient is φ = 54432000.

The previous prime is 198566327. The next prime is 198566353. The reversal of 198566346 is 643665891.

It is a junction number, because it is equal to n+sod(n) for n = 198566295 and 198566304.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3255156 + ... + 3255216.

It is an arithmetic number, because the mean of its divisors is an integer number (3731904).

Almost surely, 2^198566346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198566346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238841856).

198566346 is an abundant number, since it is smaller than the sum of its proper divisors (279117366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198566346 is a wasteful number, since it uses less digits than its factorization.

198566346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its digits is 933120, while the sum is 48.

The square root of 198566346 is about 14091.3571383313. The cubic root of 198566346 is about 583.4028521955.

The spelling of 198566346 in words is "one hundred ninety-eight million, five hundred sixty-six thousand, three hundred forty-six".