23166005 has 4 divisors (see below), whose sum is σ = 27799212. Its totient is φ = 18532800.

The previous prime is 23165999. The next prime is 23166007. The reversal of 23166005 is 50066132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17825284 + 5340721 = 4222^2 + 2311^2 .

It is not a de Polignac number, because 23166005 - 2⁶ = 23165941 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 (23166007) 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 3 ways as a sum of consecutive naturals, for example, 2316596 + ... + 2316605.

It is an arithmetic number, because the mean of its divisors is an integer number (6949803).

Almost surely, 2^23166005 is an apocalyptic number.

It is an amenable number.

23166005 is a deficient number, since it is larger than the sum of its proper divisors (4633207).

23166005 is an equidigital number, since it uses as much as digits as its factorization.

23166005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633206.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 23166005 is about 4813.1076239785. The cubic root of 23166005 is about 285.0692557660.

The spelling of 23166005 in words is "twenty-three million, one hundred sixty-six thousand, five".