605166161 has 2 divisors, whose sum is σ = 605166162. Its totient is φ = 605166160.

The previous prime is 605166151. The next prime is 605166181. The reversal of 605166161 is 161661506.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 550183936 + 54982225 = 23456^2 + 7415^2 .

It is a cyclic number.

It is not a de Polignac number, because 605166161 - 2¹⁰ = 605165137 is a prime.

It is not a weakly prime, because it can be changed into another prime (605166151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302583080 + 302583081.

It is an arithmetic number, because the mean of its divisors is an integer number (302583081).

Almost surely, 2^605166161 is an apocalyptic number.

It is an amenable number.

605166161 is a deficient number, since it is larger than the sum of its proper divisors (1).

605166161 is an equidigital number, since it uses as much as digits as its factorization.

605166161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 605166161 is about 24600.1252232585. The cubic root of 605166161 is about 845.8464778326.

The spelling of 605166161 in words is "six hundred five million, one hundred sixty-six thousand, one hundred sixty-one".