68930779 has 2 divisors, whose sum is σ = 68930780. Its totient is φ = 68930778.

The previous prime is 68930737. The next prime is 68930809. The reversal of 68930779 is 97703986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68930779 - 2¹³ = 68922587 is a prime.

It is not a weakly prime, because it can be changed into another prime (68930179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34465389 + 34465390.

It is an arithmetic number, because the mean of its divisors is an integer number (34465390).

Almost surely, 2^68930779 is an apocalyptic number.

68930779 is a deficient number, since it is larger than the sum of its proper divisors (1).

68930779 is an equidigital number, since it uses as much as digits as its factorization.

68930779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 68930779 is about 8302.4562028354. The cubic root of 68930779 is about 410.0193903183.

The spelling of 68930779 in words is "sixty-eight million, nine hundred thirty thousand, seven hundred seventy-nine".