166004105 has 8 divisors (see below), whose sum is σ = 201177864. Its totient is φ = 131488000.

The previous prime is 166004081. The next prime is 166004171. The reversal of 166004105 is 501400661.

It can be written as a sum of positive squares in 4 ways, for example, as 43414921 + 122589184 = 6589^2 + 11072^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166004105 - 2¹⁰ = 166003081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163856 + ... + 164865.

It is an arithmetic number, because the mean of its divisors is an integer number (25147233).

Almost surely, 2^166004105 is an apocalyptic number.

It is an amenable number.

166004105 is a deficient number, since it is larger than the sum of its proper divisors (35173759).

166004105 is a wasteful number, since it uses less digits than its factorization.

166004105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328827.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 166004105 is about 12884.2580306357. The cubic root of 166004105 is about 549.5909961979.

Adding to 166004105 its reverse (501400661), we get a palindrome (667404766).

The spelling of 166004105 in words is "one hundred sixty-six million, four thousand, one hundred five".