686470686 has 16 divisors (see below), whose sum is σ = 1497754368. Its totient is φ = 208021400.

The previous prime is 686470663. The next prime is 686470711. The reversal of 686470686 is 686074686.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5200470 + ... + 5200601.

It is an arithmetic number, because the mean of its divisors is an integer number (93609648).

Almost surely, 2^686470686 is an apocalyptic number.

686470686 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

686470686 is an abundant number, since it is smaller than the sum of its proper divisors (811283682).

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

686470686 is a wasteful number, since it uses less digits than its factorization.

686470686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401087.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The square root of 686470686 is about 26200.5856041425. The cubic root of 686470686 is about 882.1463987426.

The spelling of 686470686 in words is "six hundred eighty-six million, four hundred seventy thousand, six hundred eighty-six".