68788787 has 2 divisors, whose sum is σ = 68788788. Its totient is φ = 68788786.

The previous prime is 68788781. The next prime is 68788793. The reversal of 68788787 is 78788786.

It is a balanced prime because it is at equal distance from previous prime (68788781) and next prime (68788793).

It is a cyclic number.

It is not a de Polignac number, because 68788787 - 2²⁴ = 52011571 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68788781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34394393 + 34394394.

It is an arithmetic number, because the mean of its divisors is an integer number (34394394).

Almost surely, 2^68788787 is an apocalyptic number.

68788787 is a deficient number, since it is larger than the sum of its proper divisors (1).

68788787 is an equidigital number, since it uses as much as digits as its factorization.

68788787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8429568, while the sum is 59.

The square root of 68788787 is about 8293.9005901928. The cubic root of 68788787 is about 409.7376608511.

Subtracting 68788787 from its reverse (78788786), we obtain a palindrome (9999999).

The spelling of 68788787 in words is "sixty-eight million, seven hundred eighty-eight thousand, seven hundred eighty-seven".