198257061 has 4 divisors (see below), whose sum is σ = 264342752. Its totient is φ = 132171372.

The previous prime is 198257029. The next prime is 198257071. The reversal of 198257061 is 160752891.

198257061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 198257061 - 2⁵ = 198257029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198257011) 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, 33042841 + ... + 33042846.

It is an arithmetic number, because the mean of its divisors is an integer number (66085688).

Almost surely, 2^198257061 is an apocalyptic number.

It is an amenable number.

198257061 is a deficient number, since it is larger than the sum of its proper divisors (66085691).

198257061 is an equidigital number, since it uses as much as digits as its factorization.

198257061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66085690.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 198257061 is about 14080.3785815581. The cubic root of 198257061 is about 583.0997939337.

The spelling of 198257061 in words is "one hundred ninety-eight million, two hundred fifty-seven thousand, sixty-one".