166775023 has 2 divisors, whose sum is σ = 166775024. Its totient is φ = 166775022.

The previous prime is 166775017. The next prime is 166775039. The reversal of 166775023 is 320577661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166775023 - 2¹⁷ = 166643951 is a prime.

It is equal to p_9332659 and since 166775023 and 9332659 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166776023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83387511 + 83387512.

It is an arithmetic number, because the mean of its divisors is an integer number (83387512).

Almost surely, 2^166775023 is an apocalyptic number.

166775023 is a deficient number, since it is larger than the sum of its proper divisors (1).

166775023 is an equidigital number, since it uses as much as digits as its factorization.

166775023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 166775023 is about 12914.1404282283. The cubic root of 166775023 is about 550.4404438895.

The spelling of 166775023 in words is "one hundred sixty-six million, seven hundred seventy-five thousand, twenty-three".