198007 has 4 divisors (see below), whose sum is σ = 206640. Its totient is φ = 189376.

The previous prime is 197971. The next prime is 198013. The reversal of 198007 is 700891.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198007.

It is not an unprimeable number, because it can be changed into a prime (198017) 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, 4282 + ... + 4327.

It is an arithmetic number, because the mean of its divisors is an integer number (51660).

2¹⁹⁸⁰⁰⁷ is an apocalyptic number.

198007 is a deficient number, since it is larger than the sum of its proper divisors (8633).

198007 is an equidigital number, since it uses as much as digits as its factorization.

198007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8632.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 198007 is about 444.9797748213. The cubic root of 198007 is about 58.2854536819.

Adding to 198007 its reverse (700891), we get a palindrome (898898).

The spelling of 198007 in words is "one hundred ninety-eight thousand, seven".