168005069 has 2 divisors, whose sum is σ = 168005070. Its totient is φ = 168005068.

The previous prime is 168005053. The next prime is 168005077. The reversal of 168005069 is 960500861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157828969 + 10176100 = 12563^2 + 3190^2 .

It is a cyclic number.

It is not a de Polignac number, because 168005069 - 2⁴ = 168005053 is a prime.

It is a super-2 number, since 2×168005069² = 56451406419389522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168005009) 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, 84002534 + 84002535.

It is an arithmetic number, because the mean of its divisors is an integer number (84002535).

Almost surely, 2^168005069 is an apocalyptic number.

It is an amenable number.

168005069 is a deficient number, since it is larger than the sum of its proper divisors (1).

168005069 is an equidigital number, since it uses as much as digits as its factorization.

168005069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 168005069 is about 12961.6769362610. The cubic root of 168005069 is about 551.7903848183.

The spelling of 168005069 in words is "one hundred sixty-eight million, five thousand, sixty-nine".