198077147 has 4 divisors (see below), whose sum is σ = 208502280. Its totient is φ = 187652016.

The previous prime is 198077141. The next prime is 198077153. The reversal of 198077147 is 741770891.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (198077141) and next prime (198077153).

It is a cyclic number.

It is not a de Polignac number, because 198077147 - 2²⁴ = 181299931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198077098 and 198077107.

It is not an unprimeable number, because it can be changed into a prime (198077141) 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, 5212538 + ... + 5212575.

It is an arithmetic number, because the mean of its divisors is an integer number (52125570).

Almost surely, 2^198077147 is an apocalyptic number.

198077147 is a deficient number, since it is larger than the sum of its proper divisors (10425133).

198077147 is a wasteful number, since it uses less digits than its factorization.

198077147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425132.

The product of its (nonzero) digits is 98784, while the sum is 44.

The square root of 198077147 is about 14073.9883117757. The cubic root of 198077147 is about 582.9233570632.

The spelling of 198077147 in words is "one hundred ninety-eight million, seventy-seven thousand, one hundred forty-seven".