198647485 has 8 divisors (see below), whose sum is σ = 238452696. Its totient is φ = 158867520.

The previous prime is 198647459. The next prime is 198647509. The reversal of 198647485 is 584746891.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 198556281 = 302^2 + 14091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198647485 - 2⁷ = 198647357 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 26895 + ... + 33475.

It is an arithmetic number, because the mean of its divisors is an integer number (29806587).

Almost surely, 2^198647485 is an apocalyptic number.

It is an amenable number.

198647485 is a deficient number, since it is larger than the sum of its proper divisors (39805211).

198647485 is an equidigital number, since it uses as much as digits as its factorization.

198647485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12623.

The product of its digits is 1935360, while the sum is 52.

The square root of 198647485 is about 14094.2358785427. The cubic root of 198647485 is about 583.4823055349.

The spelling of 198647485 in words is "one hundred ninety-eight million, six hundred forty-seven thousand, four hundred eighty-five".