67345273 has 2 divisors, whose sum is σ = 67345274. Its totient is φ = 67345272.

The previous prime is 67345261. The next prime is 67345277. The reversal of 67345273 is 37254376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55532304 + 11812969 = 7452^2 + 3437^2 .

It is a cyclic number.

It is not a de Polignac number, because 67345273 - 2⁵ = 67345241 is a prime.

It is not a weakly prime, because it can be changed into another prime (67345277) 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, 33672636 + 33672637.

It is an arithmetic number, because the mean of its divisors is an integer number (33672637).

Almost surely, 2^67345273 is an apocalyptic number.

It is an amenable number.

67345273 is a deficient number, since it is larger than the sum of its proper divisors (1).

67345273 is an equidigital number, since it uses as much as digits as its factorization.

67345273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 37.

The square root of 67345273 is about 8206.4165748517. The cubic root of 67345273 is about 406.8512980342.

The spelling of 67345273 in words is "sixty-seven million, three hundred forty-five thousand, two hundred seventy-three".