8661673 has 2 divisors, whose sum is σ = 8661674. Its totient is φ = 8661672.

The previous prime is 8661643. The next prime is 8661683. The reversal of 8661673 is 3761668.

8661673 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8456464 + 205209 = 2908^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 8661673 - 2⁵ = 8661641 is a prime.

It is not a weakly prime, because it can be changed into another prime (8661623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330836 + 4330837.

It is an arithmetic number, because the mean of its divisors is an integer number (4330837).

Almost surely, 2^8661673 is an apocalyptic number.

It is an amenable number.

8661673 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661673 is an equidigital number, since it uses as much as digits as its factorization.

8661673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 8661673 is about 2943.0720344565. The cubic root of 8661673 is about 205.3685458412.

The spelling of 8661673 in words is "eight million, six hundred sixty-one thousand, six hundred seventy-three".