198680546 has 4 divisors (see below), whose sum is σ = 298020822. Its totient is φ = 99340272.

The previous prime is 198680533. The next prime is 198680557. The reversal of 198680546 is 645086891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 198499921 + 180625 = 14089^2 + 425^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198680546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49670135 + ... + 49670138.

Almost surely, 2^198680546 is an apocalyptic number.

198680546 is a deficient number, since it is larger than the sum of its proper divisors (99340276).

198680546 is an equidigital number, since it uses as much as digits as its factorization.

198680546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99340275.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 198680546 is about 14095.4086851003. The cubic root of 198680546 is about 583.5146734896.

The spelling of 198680546 in words is "one hundred ninety-eight million, six hundred eighty thousand, five hundred forty-six".