198456066 has 12 divisors (see below), whose sum is σ = 429988182. Its totient is φ = 66152016.

The previous prime is 198456061. The next prime is 198456073. The reversal of 198456066 is 660654891.

198456066 is a `hidden beast` number, since 1 + 9 + 84 + 560 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 137381841 + 61074225 = 11721^2 + 7815^2 .

It is not an unprimeable number, because it can be changed into a prime (198456061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5512651 + ... + 5512686.

Almost surely, 2^198456066 is an apocalyptic number.

198456066 is an abundant number, since it is smaller than the sum of its proper divisors (231532116).

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

198456066 is a wasteful number, since it uses less digits than its factorization.

198456066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11025345 (or 11025342 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 198456066 is about 14087.4435580058. The cubic root of 198456066 is about 583.2948285514.

The spelling of 198456066 in words is "one hundred ninety-eight million, four hundred fifty-six thousand, sixty-six".