198376566 has 16 divisors (see below), whose sum is σ = 405195264. Its totient is φ = 64718504.

The previous prime is 198376561. The next prime is 198376567. The reversal of 198376566 is 665673891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198376561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351450 + ... + 352013.

It is an arithmetic number, because the mean of its divisors is an integer number (25324704).

Almost surely, 2^198376566 is an apocalyptic number.

198376566 is an abundant number, since it is smaller than the sum of its proper divisors (206818698).

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

198376566 is a wasteful number, since it uses less digits than its factorization.

198376566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703515.

The product of its digits is 1632960, while the sum is 51.

The square root of 198376566 is about 14084.6216136608. The cubic root of 198376566 is about 583.2169303155.

The spelling of 198376566 in words is "one hundred ninety-eight million, three hundred seventy-six thousand, five hundred sixty-six".