67873321 has 2 divisors, whose sum is σ = 67873322. Its totient is φ = 67873320.

The previous prime is 67873303. The next prime is 67873331. The reversal of 67873321 is 12337876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34105600 + 33767721 = 5840^2 + 5811^2 .

It is a cyclic number.

It is not a de Polignac number, because 67873321 - 2⁷ = 67873193 is a prime.

It is not a weakly prime, because it can be changed into another prime (67873331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33936660 + 33936661.

It is an arithmetic number, because the mean of its divisors is an integer number (33936661).

Almost surely, 2^67873321 is an apocalyptic number.

It is an amenable number.

67873321 is a deficient number, since it is larger than the sum of its proper divisors (1).

67873321 is an equidigital number, since it uses as much as digits as its factorization.

67873321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 67873321 is about 8238.5266279839. The cubic root of 67873321 is about 407.9118918579.

The spelling of 67873321 in words is "sixty-seven million, eight hundred seventy-three thousand, three hundred twenty-one".