68634073 has 2 divisors, whose sum is σ = 68634074. Its totient is φ = 68634072.

The previous prime is 68634011. The next prime is 68634077. The reversal of 68634073 is 37043686.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37307664 + 31326409 = 6108^2 + 5597^2 .

It is a cyclic number.

It is not a de Polignac number, because 68634073 - 2⁹ = 68633561 is a prime.

It is not a weakly prime, because it can be changed into another prime (68634077) 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, 34317036 + 34317037.

It is an arithmetic number, because the mean of its divisors is an integer number (34317037).

Almost surely, 2^68634073 is an apocalyptic number.

It is an amenable number.

68634073 is a deficient number, since it is larger than the sum of its proper divisors (1).

68634073 is an equidigital number, since it uses as much as digits as its factorization.

68634073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 68634073 is about 8284.5683653405. The cubic root of 68634073 is about 409.4302476803.

The spelling of 68634073 in words is "sixty-eight million, six hundred thirty-four thousand, seventy-three".