68687 has 2 divisors, whose sum is σ = 68688. Its totient is φ = 68686.

The previous prime is 68683. The next prime is 68699. The reversal of 68687 is 78686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68687 - 2² = 68683 is a prime.

It is a Chen prime.

It is a plaindrome in base 6 and base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 68687.

It is not a weakly prime, because it can be changed into another prime (68683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34343 + 34344.

It is an arithmetic number, because the mean of its divisors is an integer number (34344).

2⁶⁸⁶⁸⁷ is an apocalyptic number.

68687 is a deficient number, since it is larger than the sum of its proper divisors (1).

68687 is an equidigital number, since it uses as much as digits as its factorization.

68687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 68687 is about 262.0820482215. The cubic root of 68687 is about 40.9535464355.

Subtracting 68687 from its reverse (78686), we obtain a palindrome (9999).

The spelling of 68687 in words is "sixty-eight thousand, six hundred eighty-seven".