68667866876686 has 16 divisors (see below), whose sum is σ = 128417828964480. Its totient is φ = 26753714367480.

The previous prime is 68667866876657. The next prime is 68667866876689.

68667866876686 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 68667866876594 and 68667866876603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68667866876689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222947619576 + ... + 222947619883.

It is an arithmetic number, because the mean of its divisors is an integer number (8026114310280).

Almost surely, 2^{68667866876686} is an apocalyptic number.

68667866876686 is a deficient number, since it is larger than the sum of its proper divisors (59749962087794).

68667866876686 is a wasteful number, since it uses less digits than its factorization.

68667866876686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445895239479.

The product of its digits is 337105649664, while the sum is 94.

The spelling of 68667866876686 in words is "sixty-eight trillion, six hundred sixty-seven billion, eight hundred sixty-six million, eight hundred seventy-six thousand, six hundred eighty-six".