197627117 has 2 divisors, whose sum is σ = 197627118. Its totient is φ = 197627116.

The previous prime is 197627041. The next prime is 197627119. The reversal of 197627117 is 711726791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193043236 + 4583881 = 13894^2 + 2141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197627117 is a prime.

Together with 197627119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197627119) by changing a digit.

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 as a sum of consecutive naturals, namely, 98813558 + 98813559.

It is an arithmetic number, because the mean of its divisors is an integer number (98813559).

Almost surely, 2^197627117 is an apocalyptic number.

It is an amenable number.

197627117 is a deficient number, since it is larger than the sum of its proper divisors (1).

197627117 is an equidigital number, since it uses as much as digits as its factorization.

197627117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 41.

The square root of 197627117 is about 14057.9912149638. The cubic root of 197627117 is about 582.4815562692.

The spelling of 197627117 in words is "one hundred ninety-seven million, six hundred twenty-seven thousand, one hundred seventeen".