1197566 has 4 divisors (see below), whose sum is σ = 1796352. Its totient is φ = 598782.

The previous prime is 1197527. The next prime is 1197571. The reversal of 1197566 is 6657911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6657911 = 13 ⋅512147.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299390 + ... + 299393.

It is an arithmetic number, because the mean of its divisors is an integer number (449088).

2^1197566 is an apocalyptic number.

1197566 is a deficient number, since it is larger than the sum of its proper divisors (598786).

1197566 is an equidigital number, since it uses as much as digits as its factorization.

1197566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598785.

The product of its digits is 11340, while the sum is 35.

The square root of 1197566 is about 1094.3335871662. Note that the first 3 decimals coincide. The cubic root of 1197566 is about 106.1939607599.

The spelling of 1197566 in words is "one million, one hundred ninety-seven thousand, five hundred sixty-six".