197090 has 8 divisors (see below), whose sum is σ = 354780. Its totient is φ = 78832.

The previous prime is 197089. The next prime is 197101. The reversal of 197090 is 90791.

It can be written as a sum of positive squares in 2 ways, for example, as 196249 + 841 = 443^2 + 29^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 197090.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 9845 + ... + 9864.

2¹⁹⁷⁰⁹⁰ is an apocalyptic number.

197090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197090 is a deficient number, since it is larger than the sum of its proper divisors (157690).

197090 is a wasteful number, since it uses less digits than its factorization.

197090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19716.

The product of its (nonzero) digits is 567, while the sum is 26.

The square root of 197090 is about 443.9481951760. The cubic root of 197090 is about 58.1953382110.

The spelling of 197090 in words is "one hundred ninety-seven thousand, ninety".