1166263 has 4 divisors (see below), whose sum is σ = 1332880. Its totient is φ = 999648.

The previous prime is 1166237. The next prime is 1166287. The reversal of 1166263 is 3626611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1166263 - 2⁹ = 1165751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83298 + ... + 83311.

It is an arithmetic number, because the mean of its divisors is an integer number (333220).

2^1166263 is an apocalyptic number.

1166263 is a deficient number, since it is larger than the sum of its proper divisors (166617).

1166263 is an equidigital number, since it uses as much as digits as its factorization.

1166263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166616.

The product of its digits is 1296, while the sum is 25.

The square root of 1166263 is about 1079.9365722115. The cubic root of 1166263 is about 105.2605171136.

The spelling of 1166263 in words is "one million, one hundred sixty-six thousand, two hundred sixty-three".