198076645 has 8 divisors (see below), whose sum is σ = 255976056. Its totient is φ = 146271936.

The previous prime is 198076643. The next prime is 198076657. The reversal of 198076645 is 546670891.

It can be written as a sum of positive squares in 4 ways, for example, as 38155329 + 159921316 = 6177^2 + 12646^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 198076645 - 2¹ = 198076643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198076595 and 198076604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198076643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1523602 + ... + 1523731.

It is an arithmetic number, because the mean of its divisors is an integer number (31997007).

Almost surely, 2^198076645 is an apocalyptic number.

It is an amenable number.

198076645 is a deficient number, since it is larger than the sum of its proper divisors (57899411).

198076645 is a wasteful number, since it uses less digits than its factorization.

198076645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047351.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 198076645 is about 14073.9704774452. The cubic root of 198076645 is about 582.9228646157.

The spelling of 198076645 in words is "one hundred ninety-eight million, seventy-six thousand, six hundred forty-five".