686740867468 has 6 divisors (see below), whose sum is σ = 1201796518076. Its totient is φ = 343370433732.

The previous prime is 686740867451. The next prime is 686740867487. The reversal of 686740867468 is 864768047686.

686740867468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×686740867468² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 686740867397 and 686740867406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85842608430 + ... + 85842608437.

Almost surely, 2^686740867468 is an apocalyptic number.

It is an amenable number.

686740867468 is a deficient number, since it is larger than the sum of its proper divisors (515055650608).

686740867468 is a wasteful number, since it uses less digits than its factorization.

686740867468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171685216871 (or 171685216869 counting only the distinct ones).

The product of its (nonzero) digits is 520224768, while the sum is 70.

The spelling of 686740867468 in words is "six hundred eighty-six billion, seven hundred forty million, eight hundred sixty-seven thousand, four hundred sixty-eight".