197117206 has 24 divisors (see below), whose sum is σ = 349282584. Its totient is φ = 82704960.

The previous prime is 197117197. The next prime is 197117213. The reversal of 197117206 is 602711791.

197117206 = 166² + 167² + ... + 841².

It is a super-3 number, since 3×197117206³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22791 + ... + 30226.

It is an arithmetic number, because the mean of its divisors is an integer number (14553441).

Almost surely, 2^197117206 is an apocalyptic number.

197117206 is a deficient number, since it is larger than the sum of its proper divisors (152165378).

197117206 is a wasteful number, since it uses less digits than its factorization.

197117206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53056 (or 53043 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 34.

The square root of 197117206 is about 14039.8435176465. The cubic root of 197117206 is about 581.9801581943.

Adding to 197117206 its reverse (602711791), we get a palindrome (799828997).

The spelling of 197117206 in words is "one hundred ninety-seven million, one hundred seventeen thousand, two hundred six".