686266323662686 has 12 divisors (see below), whose sum is σ = 1114675182517752. Its totient is φ = 316738303228776.

The previous prime is 686266323662671. The next prime is 686266323662707.

It is a happy number.

686266323662686 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×686266323662686² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1015186868986 + ... + 1015186869661.

It is an arithmetic number, because the mean of its divisors is an integer number (92889598543146).

Almost surely, 2^{686266323662686} is an apocalyptic number.

686266323662686 is a deficient number, since it is larger than the sum of its proper divisors (428408858855066).

686266323662686 is a wasteful number, since it uses less digits than its factorization.

686266323662686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030373738675 (or 2030373738662 counting only the distinct ones).

The product of its digits is 7739670528, while the sum is 76.

The spelling of 686266323662686 in words is "six hundred eighty-six trillion, two hundred sixty-six billion, three hundred twenty-three million, six hundred sixty-two thousand, six hundred eighty-six".