198056066 has 16 divisors (see below), whose sum is σ = 320572728. Its totient is φ = 91228800.

The previous prime is 198056063. The next prime is 198056093. The reversal of 198056066 is 660650891.

It can be written as a sum of positive squares in 4 ways, for example, as 43178041 + 154878025 = 6571^2 + 12445^2 .

It is not an unprimeable number, because it can be changed into a prime (198056063) 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, 6236 + ... + 20856.

Almost surely, 2^198056066 is an apocalyptic number.

198056066 is a deficient number, since it is larger than the sum of its proper divisors (122516662).

198056066 is a wasteful number, since it uses less digits than its factorization.

198056066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15157.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 198056066 is about 14073.2393570208. The cubic root of 198056066 is about 582.9026764960.

The spelling of 198056066 in words is "one hundred ninety-eight million, fifty-six thousand, sixty-six".