68473189 has 2 divisors, whose sum is σ = 68473190. Its totient is φ = 68473188.

The previous prime is 68473183. The next prime is 68473201. The reversal of 68473189 is 98137486.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58644964 + 9828225 = 7658^2 + 3135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68473189 is a prime.

It is a super-2 number, since 2×68473189² = 9377155223659442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68473183) 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, 34236594 + 34236595.

It is an arithmetic number, because the mean of its divisors is an integer number (34236595).

Almost surely, 2^68473189 is an apocalyptic number.

It is an amenable number.

68473189 is a deficient number, since it is larger than the sum of its proper divisors (1).

68473189 is an equidigital number, since it uses as much as digits as its factorization.

68473189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 68473189 is about 8274.8528083586. The cubic root of 68473189 is about 409.1100844869.

The spelling of 68473189 in words is "sixty-eight million, four hundred seventy-three thousand, one hundred eighty-nine".