68658285687 has 16 divisors (see below), whose sum is σ = 93056722560. Its totient is φ = 45016207200.

The previous prime is 68658285673. The next prime is 68658285727. The reversal of 68658285687 is 78658285686.

It is not a de Polignac number, because 68658285687 - 2⁶ = 68658285623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68658285667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1859112 + ... + 1895682.

It is an arithmetic number, because the mean of its divisors is an integer number (5816045160).

Almost surely, 2^68658285687 is an apocalyptic number.

68658285687 is a deficient number, since it is larger than the sum of its proper divisors (24398436873).

68658285687 is a wasteful number, since it uses less digits than its factorization.

68658285687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46894.

The product of its digits is 309657600, while the sum is 69.

Subtracting 68658285687 from its reverse (78658285686), we obtain a palindrome (9999999999).

The spelling of 68658285687 in words is "sixty-eight billion, six hundred fifty-eight million, two hundred eighty-five thousand, six hundred eighty-seven".