1173080866 has 4 divisors (see below), whose sum is σ = 1759621302. Its totient is φ = 586540432.

The previous prime is 1173080863. The next prime is 1173080927. The reversal of 1173080866 is 6680803711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6680803711 = 20747 ⋅322013.

It can be written as a sum of positive squares in only one way, i.e., 645414025 + 527666841 = 25405^2 + 22971^2 .

It is a super-2 number, since 2×1173080866² = 2752237436350619912, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1173080863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 293270215 + ... + 293270218.

Almost surely, 2^1173080866 is an apocalyptic number.

1173080866 is a deficient number, since it is larger than the sum of its proper divisors (586540436).

1173080866 is an equidigital number, since it uses as much as digits as its factorization.

1173080866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586540435.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 1173080866 is about 34250.2681157389. The cubic root of 1173080866 is about 1054.6523314024.

The spelling of 1173080866 in words is "one billion, one hundred seventy-three million, eighty thousand, eight hundred sixty-six".