687682563673 has 8 divisors (see below), whose sum is σ = 785929372992. Its totient is φ = 589437365136.

The previous prime is 687682563611. The next prime is 687682563697. The reversal of 687682563673 is 376365286786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 687682563673 - 2³⁷ = 550243610201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 687682563599 and 687682563608.

It is not an unprimeable number, because it can be changed into a prime (687682563173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721311 + ... + 1376827.

It is an arithmetic number, because the mean of its divisors is an integer number (98241171624).

Almost surely, 2^687682563673 is an apocalyptic number.

It is an amenable number.

687682563673 is a deficient number, since it is larger than the sum of its proper divisors (98246809319).

687682563673 is a wasteful number, since it uses less digits than its factorization.

687682563673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805391.

The product of its digits is 365783040, while the sum is 67.

The spelling of 687682563673 in words is "six hundred eighty-seven billion, six hundred eighty-two million, five hundred sixty-three thousand, six hundred seventy-three".