1166705 has 4 divisors (see below), whose sum is σ = 1400052. Its totient is φ = 933360.

The previous prime is 1166687. The next prime is 1166713. The reversal of 1166705 is 5076611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5076611 = 47 ⋅108013.

It can be written as a sum of positive squares in 2 ways, for example, as 552049 + 614656 = 743^2 + 784^2 .

It is not a de Polignac number, because 1166705 - 2¹⁶ = 1101169 is a prime.

It is a super-2 number, since 2×1166705² = 2722401114050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 116666 + ... + 116675.

It is an arithmetic number, because the mean of its divisors is an integer number (350013).

2^1166705 is an apocalyptic number.

It is an amenable number.

1166705 is a deficient number, since it is larger than the sum of its proper divisors (233347).

1166705 is an equidigital number, since it uses as much as digits as its factorization.

1166705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233346.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1166705 is about 1080.1411944741. The cubic root of 1166705 is about 105.2738129346.

The spelling of 1166705 in words is "one million, one hundred sixty-six thousand, seven hundred five".