198970 has 16 divisors (see below), whose sum is σ = 363528. Its totient is φ = 78400.

The previous prime is 198967. The next prime is 198971. The reversal of 198970 is 79891.

198970 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 194481 + 4489 = 441^2 + 67^2 .

It is not an unprimeable number, because it can be changed into a prime (198971) 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, 912 + ... + 1108.

2¹⁹⁸⁹⁷⁰ is an apocalyptic number.

198970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198970 is a deficient number, since it is larger than the sum of its proper divisors (164558).

198970 is a wasteful number, since it uses less digits than its factorization.

198970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 198970 is about 446.0605340086. The cubic root of 198970 is about 58.3797906554.

The spelling of 198970 in words is "one hundred ninety-eight thousand, nine hundred seventy".