1686686010663 has 8 divisors (see below), whose sum is σ = 2255588019568. Its totient is φ = 1121120671104.

The previous prime is 1686686010589. The next prime is 1686686010739. The reversal of 1686686010663 is 3660106866861.

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

It is not a de Polignac number, because 1686686010663 - 2⁸ = 1686686010407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1686686080663) 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, 834166156 + ... + 834168177.

It is an arithmetic number, because the mean of its divisors is an integer number (281948502446).

Almost surely, 2^{1686686010663} is an apocalyptic number.

1686686010663 is a deficient number, since it is larger than the sum of its proper divisors (568902008905).

1686686010663 is a wasteful number, since it uses less digits than its factorization.

1686686010663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668334673.

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 1686686010663 in words is "one trillion, six hundred eighty-six billion, six hundred eighty-six million, ten thousand, six hundred sixty-three".