68784727663 has 2 divisors, whose sum is σ = 68784727664. Its totient is φ = 68784727662.

The previous prime is 68784727657. The next prime is 68784727681. The reversal of 68784727663 is 36672748786.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68784727663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68784727595 and 68784727604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68784727163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34392363831 + 34392363832.

It is an arithmetic number, because the mean of its divisors is an integer number (34392363832).

Almost surely, 2^68784727663 is an apocalyptic number.

68784727663 is a deficient number, since it is larger than the sum of its proper divisors (1).

68784727663 is an equidigital number, since it uses as much as digits as its factorization.

68784727663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113799168, while the sum is 64.

The spelling of 68784727663 in words is "sixty-eight billion, seven hundred eighty-four million, seven hundred twenty-seven thousand, six hundred sixty-three".