68093689 has 2 divisors, whose sum is σ = 68093690. Its totient is φ = 68093688.

The previous prime is 68093657. The next prime is 68093693. The reversal of 68093689 is 98639086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59799289 + 8294400 = 7733^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 68093689 - 2⁵ = 68093657 is a prime.

It is not a weakly prime, because it can be changed into another prime (68093699) 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, 34046844 + 34046845.

It is an arithmetic number, because the mean of its divisors is an integer number (34046845).

Almost surely, 2^68093689 is an apocalyptic number.

It is an amenable number.

68093689 is a deficient number, since it is larger than the sum of its proper divisors (1).

68093689 is an equidigital number, since it uses as much as digits as its factorization.

68093689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 68093689 is about 8251.8900259274. The cubic root of 68093689 is about 408.3528781797.

The spelling of 68093689 in words is "sixty-eight million, ninety-three thousand, six hundred eighty-nine".