1166327761 has 2 divisors, whose sum is σ = 1166327762. Its totient is φ = 1166327760.

The previous prime is 1166327731. The next prime is 1166327803. The reversal of 1166327761 is 1677236611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1131044161 + 35283600 = 33631^2 + 5940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166327761 - 2¹⁹ = 1165803473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166327731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583163880 + 583163881.

It is an arithmetic number, because the mean of its divisors is an integer number (583163881).

Almost surely, 2^1166327761 is an apocalyptic number.

It is an amenable number.

1166327761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166327761 is an equidigital number, since it uses as much as digits as its factorization.

1166327761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 1166327761 is about 34151.5411218879. The cubic root of 1166327761 is about 1052.6246540202.

The spelling of 1166327761 in words is "one billion, one hundred sixty-six million, three hundred twenty-seven thousand, seven hundred sixty-one".