1171197 has 12 divisors (see below), whose sum is σ = 1703520. Its totient is φ = 775368.

The previous prime is 1171189. The next prime is 1171199. The reversal of 1171197 is 7911711.

It is not a de Polignac number, because 1171197 - 2³ = 1171189 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1171197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1248 + ... + 1974.

It is an arithmetic number, because the mean of its divisors is an integer number (141960).

2^1171197 is an apocalyptic number.

It is an amenable number.

1171197 is a deficient number, since it is larger than the sum of its proper divisors (532323).

1171197 is a wasteful number, since it uses less digits than its factorization.

1171197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 909 counting only the distinct ones).

The product of its digits is 441, while the sum is 27.

The square root of 1171197 is about 1082.2185546367. The cubic root of 1171197 is about 105.4087468902.

The spelling of 1171197 in words is "one million, one hundred seventy-one thousand, one hundred ninety-seven".