68790010687 has 2 divisors, whose sum is σ = 68790010688. Its totient is φ = 68790010686.

The previous prime is 68790010669. The next prime is 68790010697. The reversal of 68790010687 is 78601009786.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68790010687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68790010697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34395005343 + 34395005344.

It is an arithmetic number, because the mean of its divisors is an integer number (34395005344).

Almost surely, 2^68790010687 is an apocalyptic number.

68790010687 is a deficient number, since it is larger than the sum of its proper divisors (1).

68790010687 is an equidigital number, since it uses as much as digits as its factorization.

68790010687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 68790010687 in words is "sixty-eight billion, seven hundred ninety million, ten thousand, six hundred eighty-seven".