686383686 has 16 divisors (see below), whose sum is σ = 1525297200. Its totient is φ = 228794544.

The previous prime is 686383667. The next prime is 686383699.

686383686 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×686383686² = 942245128813893192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 12710809 = 686383686 / (6 + 8 + 6 + 3 + 8 + 3 + 6 + 8 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6355351 + ... + 6355458.

It is an arithmetic number, because the mean of its divisors is an integer number (95331075).

Almost surely, 2^686383686 is an apocalyptic number.

686383686 is an abundant number, since it is smaller than the sum of its proper divisors (838913514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686383686 is a wasteful number, since it uses less digits than its factorization.

686383686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710820 (or 12710814 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 54.

The square root of 686383686 is about 26198.9252833012. The cubic root of 686383686 is about 882.1091308346.

The spelling of 686383686 in words is "six hundred eighty-six million, three hundred eighty-three thousand, six hundred eighty-six".