8642173 has 2 divisors, whose sum is σ = 8642174. Its totient is φ = 8642172.

The previous prime is 8642159. The next prime is 8642189. The reversal of 8642173 is 3712468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8514724 + 127449 = 2918^2 + 357^2 .

It is a cyclic number.

It is not a de Polignac number, because 8642173 - 2⁵ = 8642141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8642773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4321086 + 4321087.

It is an arithmetic number, because the mean of its divisors is an integer number (4321087).

Almost surely, 2^8642173 is an apocalyptic number.

It is an amenable number.

8642173 is a deficient number, since it is larger than the sum of its proper divisors (1).

8642173 is an equidigital number, since it uses as much as digits as its factorization.

8642173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 8642173 is about 2939.7573029078. The cubic root of 8642173 is about 205.2143148339.

The spelling of 8642173 in words is "eight million, six hundred forty-two thousand, one hundred seventy-three".