168284005 has 4 divisors (see below), whose sum is σ = 201940812. Its totient is φ = 134627200.

The previous prime is 168283993. The next prime is 168284009. The reversal of 168284005 is 500482861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500482861 = 163 ⋅3070447.

It can be written as a sum of positive squares in 2 ways, for example, as 35988001 + 132296004 = 5999^2 + 11502^2 .

It is not a de Polignac number, because 168284005 - 2¹⁹ = 167759717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168284009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16828396 + ... + 16828405.

It is an arithmetic number, because the mean of its divisors is an integer number (50485203).

Almost surely, 2^168284005 is an apocalyptic number.

It is an amenable number.

168284005 is a deficient number, since it is larger than the sum of its proper divisors (33656807).

168284005 is an equidigital number, since it uses as much as digits as its factorization.

168284005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33656806.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 168284005 is about 12972.4325012698. The cubic root of 168284005 is about 552.0955920794.

The spelling of 168284005 in words is "one hundred sixty-eight million, two hundred eighty-four thousand, five".