68787 has 6 divisors (see below), whose sum is σ = 99372. Its totient is φ = 45852.

The previous prime is 68777. The next prime is 68791. The reversal of 68787 is 78786.

It is a happy number.

It is not a de Polignac number, because 68787 - 2⁴ = 68771 is a prime.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 68787.

It is not an unprimeable number, because it can be changed into a prime (68737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3813 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (16562).

2⁶⁸⁷⁸⁷ is an apocalyptic number.

68787 is a deficient number, since it is larger than the sum of its proper divisors (30585).

68787 is a wasteful number, since it uses less digits than its factorization.

68787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649 (or 7646 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 68787 is about 262.2727587837. The cubic root of 68787 is about 40.9734112756.

Subtracting 68787 from its reverse (78786), we obtain a palindrome (9999).

The spelling of 68787 in words is "sixty-eight thousand, seven hundred eighty-seven".