68719799 has 2 divisors, whose sum is σ = 68719800. Its totient is φ = 68719798.

The previous prime is 68719769. The next prime is 68719829. The reversal of 68719799 is 99791786.

It is a balanced prime because it is at equal distance from previous prime (68719769) and next prime (68719829).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68719799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68719759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34359899 + 34359900.

It is an arithmetic number, because the mean of its divisors is an integer number (34359900).

Almost surely, 2^68719799 is an apocalyptic number.

68719799 is a deficient number, since it is larger than the sum of its proper divisors (1).

68719799 is an equidigital number, since it uses as much as digits as its factorization.

68719799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 56.

The square root of 68719799 is about 8289.7405870148. The cubic root of 68719799 is about 409.6006402800.

The spelling of 68719799 in words is "sixty-eight million, seven hundred nineteen thousand, seven hundred ninety-nine".