686966824063 has 4 divisors (see below), whose sum is σ = 739810425928. Its totient is φ = 634123222200.

The previous prime is 686966824051. The next prime is 686966824073. The reversal of 686966824063 is 360428669686.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-686966824063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686966823986 and 686966824004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686966824073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26421800913 + ... + 26421800938.

It is an arithmetic number, because the mean of its divisors is an integer number (184952606482).

Almost surely, 2^686966824063 is an apocalyptic number.

686966824063 is a deficient number, since it is larger than the sum of its proper divisors (52843601865).

686966824063 is a wasteful number, since it uses less digits than its factorization.

686966824063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52843601864.

The product of its (nonzero) digits is 107495424, while the sum is 64.

The spelling of 686966824063 in words is "six hundred eighty-six billion, nine hundred sixty-six million, eight hundred twenty-four thousand, sixty-three".