8173643 has 2 divisors, whose sum is σ = 8173644. Its totient is φ = 8173642.

The previous prime is 8173597. The next prime is 8173663. The reversal of 8173643 is 3463718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8173643 - 2⁸ = 8173387 is a prime.

It is not a weakly prime, because it can be changed into another prime (8173663) 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 as a sum of consecutive naturals, namely, 4086821 + 4086822.

It is an arithmetic number, because the mean of its divisors is an integer number (4086822).

Almost surely, 2^8173643 is an apocalyptic number.

8173643 is a deficient number, since it is larger than the sum of its proper divisors (1).

8173643 is an equidigital number, since it uses as much as digits as its factorization.

8173643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 32.

The square root of 8173643 is about 2858.9583767519. The cubic root of 8173643 is about 201.4366800408.

The spelling of 8173643 in words is "eight million, one hundred seventy-three thousand, six hundred forty-three".