686429924686 has 16 divisors (see below), whose sum is σ = 1123283658240. Its totient is φ = 312003965880.

The previous prime is 686429924683. The next prime is 686429924717.

686429924686 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686429924681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272995 + ... + 1203073.

It is an arithmetic number, because the mean of its divisors is an integer number (70205228640).

Almost surely, 2^686429924686 is an apocalyptic number.

686429924686 is a deficient number, since it is larger than the sum of its proper divisors (436853733554).

686429924686 is a wasteful number, since it uses less digits than its factorization.

686429924686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963639.

The product of its digits is 429981696, while the sum is 70.

The spelling of 686429924686 in words is "six hundred eighty-six billion, four hundred twenty-nine million, nine hundred twenty-four thousand, six hundred eighty-six".