73168729 has 2 divisors, whose sum is σ = 73168730. Its totient is φ = 73168728.

The previous prime is 73168717. The next prime is 73168741. The reversal of 73168729 is 92786137.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (73168717) and next prime (73168741).

It can be written as a sum of positive squares in only one way, i.e., 36626704 + 36542025 = 6052^2 + 6045^2 .

It is a cyclic number.

It is not a de Polignac number, because 73168729 - 2⁹ = 73168217 is a prime.

It is not a weakly prime, because it can be changed into another prime (73168709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36584364 + 36584365.

It is an arithmetic number, because the mean of its divisors is an integer number (36584365).

Almost surely, 2^73168729 is an apocalyptic number.

It is an amenable number.

73168729 is a deficient number, since it is larger than the sum of its proper divisors (1).

73168729 is an equidigital number, since it uses as much as digits as its factorization.

73168729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 73168729 is about 8553.8721641137. The cubic root of 73168729 is about 418.2556699193.

The spelling of 73168729 in words is "seventy-three million, one hundred sixty-eight thousand, seven hundred twenty-nine".