198895607 has 4 divisors (see below), whose sum is σ = 200162616. Its totient is φ = 197628600.

The previous prime is 198895603. The next prime is 198895621. The reversal of 198895607 is 706598891.

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

It is a cyclic number.

It is not a de Polignac number, because 198895607 - 2² = 198895603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198895603) 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, 633269 + ... + 633582.

It is an arithmetic number, because the mean of its divisors is an integer number (50040654).

Almost surely, 2^198895607 is an apocalyptic number.

198895607 is a deficient number, since it is larger than the sum of its proper divisors (1267009).

198895607 is a wasteful number, since it uses less digits than its factorization.

198895607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267008.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 198895607 is about 14103.0353824983. The cubic root of 198895607 is about 583.7251386472.

The spelling of 198895607 in words is "one hundred ninety-eight million, eight hundred ninety-five thousand, six hundred seven".