68654779 has 2 divisors, whose sum is σ = 68654780. Its totient is φ = 68654778.

The previous prime is 68654777. The next prime is 68654783. The reversal of 68654779 is 97745686.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68654779 - 2¹ = 68654777 is a prime.

Together with 68654777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68654777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34327389 + 34327390.

It is an arithmetic number, because the mean of its divisors is an integer number (34327390).

Almost surely, 2^68654779 is an apocalyptic number.

68654779 is a deficient number, since it is larger than the sum of its proper divisors (1).

68654779 is an equidigital number, since it uses as much as digits as its factorization.

68654779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The square root of 68654779 is about 8285.8179439329. The cubic root of 68654779 is about 409.4714167865.

The spelling of 68654779 in words is "sixty-eight million, six hundred fifty-four thousand, seven hundred seventy-nine".