198970566 has 32 divisors (see below), whose sum is σ = 415549440. Its totient is φ = 63432096.

The previous prime is 198970561. The next prime is 198970573. The reversal of 198970566 is 665079891.

198970566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198970566² = 79178572268720712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198970561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13275 + ... + 23961.

It is an arithmetic number, because the mean of its divisors is an integer number (12985920).

Almost surely, 2^198970566 is an apocalyptic number.

198970566 is an abundant number, since it is smaller than the sum of its proper divisors (216578874).

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

198970566 is a wasteful number, since it uses less digits than its factorization.

198970566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10828.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 198970566 is about 14105.6926806166. The cubic root of 198970566 is about 583.7984601208.

The spelling of 198970566 in words is "one hundred ninety-eight million, nine hundred seventy thousand, five hundred sixty-six".