197111671 has 6 divisors (see below), whose sum is σ = 203676216. Its totient is φ = 190752300.

The previous prime is 197111669. The next prime is 197111687. The reversal of 197111671 is 176111791.

It is not a de Polignac number, because 197111671 - 2¹ = 197111669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197111071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101595 + ... + 103516.

It is an arithmetic number, because the mean of its divisors is an integer number (33946036).

Almost surely, 2^197111671 is an apocalyptic number.

197111671 is a deficient number, since it is larger than the sum of its proper divisors (6564545).

197111671 is an equidigital number, since it uses as much as digits as its factorization.

197111671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205173 (or 205142 counting only the distinct ones).

The product of its digits is 2646, while the sum is 34.

The square root of 197111671 is about 14039.6463986811. The cubic root of 197111671 is about 581.9747108594.

The spelling of 197111671 in words is "one hundred ninety-seven million, one hundred eleven thousand, six hundred seventy-one".