1166813 has 8 divisors (see below), whose sum is σ = 1232448. Its totient is φ = 1102464.

The previous prime is 1166807. The next prime is 1166827. The reversal of 1166813 is 3186611.

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

It is a cyclic number.

It is not a de Polignac number, because 1166813 - 2¹⁰ = 1165789 is a prime.

It is a super-2 number, since 2×1166813² = 2722905153938, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166833) 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 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 2492.

It is an arithmetic number, because the mean of its divisors is an integer number (154056).

2^1166813 is an apocalyptic number.

It is an amenable number.

1166813 is a deficient number, since it is larger than the sum of its proper divisors (65635).

1166813 is an equidigital number, since it uses as much as digits as its factorization.

1166813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643.

The product of its digits is 864, while the sum is 26.

The square root of 1166813 is about 1080.1911867813. The cubic root of 1166813 is about 105.2770611767.

The spelling of 1166813 in words is "one million, one hundred sixty-six thousand, eight hundred thirteen".