1166397 has 8 divisors (see below), whose sum is σ = 1562400. Its totient is φ = 774000.

The previous prime is 1166393. The next prime is 1166401. The reversal of 1166397 is 7936611.

It is an interprime number because it is at equal distance from previous prime (1166393) and next prime (1166401).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166397 - 2² = 1166393 is a prime.

1166397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22 + ... + 1527.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

2^1166397 is an apocalyptic number.

It is an amenable number.

1166397 is a deficient number, since it is larger than the sum of its proper divisors (396003).

1166397 is a wasteful number, since it uses less digits than its factorization.

1166397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its digits is 6804, while the sum is 33.

The square root of 1166397 is about 1079.9986111102. The cubic root of 1166397 is about 105.2645483281.

It can be divided in two parts, 11663 and 97, that multiplied together give a palindrome (1131311).

The spelling of 1166397 in words is "one million, one hundred sixty-six thousand, three hundred ninety-seven".