68566073 has 2 divisors, whose sum is σ = 68566074. Its totient is φ = 68566072.

The previous prime is 68566039. The next prime is 68566097. The reversal of 68566073 is 37066586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68343289 + 222784 = 8267^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 68566073 - 2²⁴ = 51788857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68566073.

It is not a weakly prime, because it can be changed into another prime (68566273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34283036 + 34283037.

It is an arithmetic number, because the mean of its divisors is an integer number (34283037).

Almost surely, 2^68566073 is an apocalyptic number.

It is an amenable number.

68566073 is a deficient number, since it is larger than the sum of its proper divisors (1).

68566073 is an equidigital number, since it uses as much as digits as its factorization.

68566073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 68566073 is about 8280.4633324470. The cubic root of 68566073 is about 409.2949870856.

The spelling of 68566073 in words is "sixty-eight million, five hundred sixty-six thousand, seventy-three".