70198 has 4 divisors (see below), whose sum is σ = 105300. Its totient is φ = 35098.

The previous prime is 70183. The next prime is 70199. The reversal of 70198 is 89107.

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

It is a plaindrome in base 16.

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 70198.

It is not an unprimeable number, because it can be changed into a prime (70199) by changing a digit.

70198 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17548 + ... + 17551.

It is an arithmetic number, because the mean of its divisors is an integer number (26325).

2⁷⁰¹⁹⁸ is an apocalyptic number.

70198 is a deficient number, since it is larger than the sum of its proper divisors (35102).

70198 is a wasteful number, since it uses less digits than its factorization.

70198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35101.

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

The square root of 70198 is about 264.9490517062. The cubic root of 70198 is about 41.2516742510.

The spelling of 70198 in words is "seventy thousand, one hundred ninety-eight".