686366626 has 16 divisors (see below), whose sum is σ = 1139911200. Its totient is φ = 307327680.

The previous prime is 686366623. The next prime is 686366651. The reversal of 686366626 is 626663686.

It is a happy number.

686366626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 686366626.

It is not an unprimeable number, because it can be changed into a prime (686366623) 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, 231351 + ... + 234298.

It is an arithmetic number, because the mean of its divisors is an integer number (71244450).

Almost surely, 2^686366626 is an apocalyptic number.

686366626 is a deficient number, since it is larger than the sum of its proper divisors (453544574).

686366626 is a wasteful number, since it uses less digits than its factorization.

686366626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465729.

The product of its digits is 2239488, while the sum is 49.

The square root of 686366626 is about 26198.5996954036. The cubic root of 686366626 is about 882.1018225284.

The spelling of 686366626 in words is "six hundred eighty-six million, three hundred sixty-six thousand, six hundred twenty-six".