1166997 has 16 divisors (see below), whose sum is σ = 1749888. Its totient is φ = 686400.

The previous prime is 1166987. The next prime is 1167011. The reversal of 1166997 is 7996611.

It is not a de Polignac number, because 1166997 - 2⁸ = 1166741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

1166997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166927) 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 15 ways as a sum of consecutive naturals, for example, 247 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (109368).

2^1166997 is an apocalyptic number.

It is an amenable number.

1166997 is a deficient number, since it is larger than the sum of its proper divisors (582891).

1166997 is a wasteful number, since it uses less digits than its factorization.

1166997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 20412, while the sum is 39.

The square root of 1166997 is about 1080.2763535318. The cubic root of 1166997 is about 105.2825947572.

The spelling of 1166997 in words is "one million, one hundred sixty-six thousand, nine hundred ninety-seven".