166600005 has 64 divisors (see below), whose sum is σ = 316673280. Its totient is φ = 73728000.

The previous prime is 166600003. The next prime is 166600013. The reversal of 166600005 is 500006661.

It is not a de Polignac number, because 166600005 - 2¹ = 166600003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166600001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216261 + ... + 217029.

It is an arithmetic number, because the mean of its divisors is an integer number (4948020).

Almost surely, 2^166600005 is an apocalyptic number.

166600005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166600005 is a deficient number, since it is larger than the sum of its proper divisors (150073275).

166600005 is a wasteful number, since it uses less digits than its factorization.

166600005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 166600005 is about 12907.3624338979. The cubic root of 166600005 is about 550.2478277070.

Adding to 166600005 its reverse (500006661), we get a palindrome (666606666).

The spelling of 166600005 in words is "one hundred sixty-six million, six hundred thousand, five".