686296688263 has 4 divisors (see below), whose sum is σ = 688008151728. Its totient is φ = 684585224800.

The previous prime is 686296688243. The next prime is 686296688267. The reversal of 686296688263 is 362886692686.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-686296688263 is a prime.

It is a super-2 number, since 2×686296688263² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 686296688192 and 686296688201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686296688267) 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, 855731131 + ... + 855731932.

It is an arithmetic number, because the mean of its divisors is an integer number (172002037932).

Almost surely, 2^686296688263 is an apocalyptic number.

686296688263 is a deficient number, since it is larger than the sum of its proper divisors (1711463465).

686296688263 is a wasteful number, since it uses less digits than its factorization.

686296688263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711463464.

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

The spelling of 686296688263 in words is "six hundred eighty-six billion, two hundred ninety-six million, six hundred eighty-eight thousand, two hundred sixty-three".