1166705723 has 2 divisors, whose sum is σ = 1166705724. Its totient is φ = 1166705722.

The previous prime is 1166705671. The next prime is 1166705741. The reversal of 1166705723 is 3275076611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166705723 is a prime.

It is a super-2 number, since 2×1166705723² = 2722404488161905458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166705623) 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 as a sum of consecutive naturals, namely, 583352861 + 583352862.

It is an arithmetic number, because the mean of its divisors is an integer number (583352862).

Almost surely, 2^1166705723 is an apocalyptic number.

1166705723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166705723 is an equidigital number, since it uses as much as digits as its factorization.

1166705723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1166705723 is about 34157.0742745921. The cubic root of 1166705723 is about 1052.7383468043.

The spelling of 1166705723 in words is "one billion, one hundred sixty-six million, seven hundred five thousand, seven hundred twenty-three".