166760761 has 2 divisors, whose sum is σ = 166760762. Its totient is φ = 166760760.

The previous prime is 166760729. The next prime is 166760771. The reversal of 166760761 is 167067661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161671225 + 5089536 = 12715^2 + 2256^2 .

It is a cyclic number.

It is not a de Polignac number, because 166760761 - 2⁵ = 166760729 is a prime.

It is not a weakly prime, because it can be changed into another prime (166760771) 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, 83380380 + 83380381.

It is an arithmetic number, because the mean of its divisors is an integer number (83380381).

Almost surely, 2^166760761 is an apocalyptic number.

It is an amenable number.

166760761 is a deficient number, since it is larger than the sum of its proper divisors (1).

166760761 is an equidigital number, since it uses as much as digits as its factorization.

166760761 is an odious number, because the sum of its binary digits is odd.

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

The square root of 166760761 is about 12913.5882310069. The cubic root of 166760761 is about 550.4247528800.

The spelling of 166760761 in words is "one hundred sixty-six million, seven hundred sixty thousand, seven hundred sixty-one".