1170985 has 4 divisors (see below), whose sum is σ = 1405188. Its totient is φ = 936784.

The previous prime is 1170979. The next prime is 1171031. The reversal of 1170985 is 5890711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5890711 = 179 ⋅32909.

It can be written as a sum of positive squares in 2 ways, for example, as 257049 + 913936 = 507^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170985 - 2⁷ = 1170857 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 117094 + ... + 117103.

It is an arithmetic number, because the mean of its divisors is an integer number (351297).

2^1170985 is an apocalyptic number.

It is an amenable number.

1170985 is a deficient number, since it is larger than the sum of its proper divisors (234203).

1170985 is an equidigital number, since it uses as much as digits as its factorization.

1170985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234202.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1170985 is about 1082.1206032601. The cubic root of 1170985 is about 105.4023864450.

The spelling of 1170985 in words is "one million, one hundred seventy thousand, nine hundred eighty-five".