198564004 has 12 divisors (see below), whose sum is σ = 347802700. Its totient is φ = 99191808.

The previous prime is 198564001. The next prime is 198564007. The reversal of 198564004 is 400465891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198564001) and next prime (198564007).

It can be written as a sum of positive squares in 2 ways, for example, as 68558400 + 130005604 = 8280^2 + 11402^2 .

It is not an unprimeable number, because it can be changed into a prime (198564001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17469 + ... + 26500.

Almost surely, 2^198564004 is an apocalyptic number.

It is an amenable number.

198564004 is a deficient number, since it is larger than the sum of its proper divisors (149238696).

198564004 is a wasteful number, since it uses less digits than its factorization.

198564004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45102 (or 45100 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 198564004 is about 14091.2740375028. The cubic root of 198564004 is about 583.4005585291.

The spelling of 198564004 in words is "one hundred ninety-eight million, five hundred sixty-four thousand, four".