166304005 has 16 divisors (see below), whose sum is σ = 233380224. Its totient is φ = 111384000.

The previous prime is 166304003. The next prime is 166304023. The reversal of 166304005 is 500403661.

It is not a de Polignac number, because 166304005 - 2¹ = 166304003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166304003) 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 in 15 ways as a sum of consecutive naturals, for example, 53746 + ... + 56755.

It is an arithmetic number, because the mean of its divisors is an integer number (14586264).

Almost surely, 2^166304005 is an apocalyptic number.

It is an amenable number.

166304005 is a deficient number, since it is larger than the sum of its proper divisors (67076219).

166304005 is a wasteful number, since it uses less digits than its factorization.

166304005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110556.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 166304005 is about 12895.8910122566. The cubic root of 166304005 is about 549.9217574649.

Adding to 166304005 its reverse (500403661), we get a palindrome (666707666).

The spelling of 166304005 in words is "one hundred sixty-six million, three hundred four thousand, five".