166364761 has 2 divisors, whose sum is σ = 166364762. Its totient is φ = 166364760.

The previous prime is 166364753. The next prime is 166364767. The reversal of 166364761 is 167463661.

166364761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112254025 + 54110736 = 10595^2 + 7356^2 .

It is a cyclic number.

It is not a de Polignac number, because 166364761 - 2³ = 166364753 is a prime.

It is not a weakly prime, because it can be changed into another prime (166364767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83182380 + 83182381.

It is an arithmetic number, because the mean of its divisors is an integer number (83182381).

Almost surely, 2^166364761 is an apocalyptic number.

It is an amenable number.

166364761 is a deficient number, since it is larger than the sum of its proper divisors (1).

166364761 is an equidigital number, since it uses as much as digits as its factorization.

166364761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 166364761 is about 12898.2464312014. The cubic root of 166364761 is about 549.9887171239.

The spelling of 166364761 in words is "one hundred sixty-six million, three hundred sixty-four thousand, seven hundred sixty-one".