1166978 has 8 divisors (see below), whose sum is σ = 1774668. Its totient is φ = 575424.

The previous prime is 1166969. The next prime is 1166987. The reversal of 1166978 is 8796611.

It is an interprime number because it is at equal distance from previous prime (1166969) and next prime (1166987).

It can be written as a sum of positive squares in 2 ways, for example, as 1117249 + 49729 = 1057^2 + 223^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3851 + ... + 4142.

2^1166978 is an apocalyptic number.

1166978 is a deficient number, since it is larger than the sum of its proper divisors (607690).

1166978 is an equidigital number, since it uses as much as digits as its factorization.

1166978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8068.

The product of its digits is 18144, while the sum is 38.

The square root of 1166978 is about 1080.2675594500. The cubic root of 1166978 is about 105.2820233818.

The spelling of 1166978 in words is "one million, one hundred sixty-six thousand, nine hundred seventy-eight".