1197197 has 2 divisors, whose sum is σ = 1197198. Its totient is φ = 1197196.

The previous prime is 1197193. The next prime is 1197199. The reversal of 1197197 is 7917911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1196836 + 361 = 1094^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 1197197 - 2² = 1197193 is a prime.

Together with 1197199, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598598 + 598599.

It is an arithmetic number, because the mean of its divisors is an integer number (598599).

2^1197197 is an apocalyptic number.

It is an amenable number.

1197197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197197 is an equidigital number, since it uses as much as digits as its factorization.

1197197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969, while the sum is 35.

The square root of 1197197 is about 1094.1649784196. The cubic root of 1197197 is about 106.1830526355.

The spelling of 1197197 in words is "one million, one hundred ninety-seven thousand, one hundred ninety-seven".