673182221 has 2 divisors, whose sum is σ = 673182222. Its totient is φ = 673182220.

The previous prime is 673182187. The next prime is 673182233. The reversal of 673182221 is 122281376.

673182221 is digitally balanced in base 2, 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., 653058025 + 20124196 = 25555^2 + 4486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673182221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673182241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336591110 + 336591111.

It is an arithmetic number, because the mean of its divisors is an integer number (336591111).

Almost surely, 2^673182221 is an apocalyptic number.

It is an amenable number.

673182221 is a deficient number, since it is larger than the sum of its proper divisors (1).

673182221 is an equidigital number, since it uses as much as digits as its factorization.

673182221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 673182221 is about 25945.7553561271. The cubic root of 673182221 is about 876.4171738348.

The spelling of 673182221 in words is "six hundred seventy-three million, one hundred eighty-two thousand, two hundred twenty-one".