686457214 has 8 divisors (see below), whose sum is σ = 1032603840. Its totient is φ = 342255936.

The previous prime is 686457209. The next prime is 686457293. The reversal of 686457214 is 412754686.

686457214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485454 + ... + 486865.

It is an arithmetic number, because the mean of its divisors is an integer number (129075480).

Almost surely, 2^686457214 is an apocalyptic number.

686457214 is a deficient number, since it is larger than the sum of its proper divisors (346146626).

686457214 is a wasteful number, since it uses less digits than its factorization.

686457214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972674.

The product of its digits is 322560, while the sum is 43.

The square root of 686457214 is about 26200.3285093909. The cubic root of 686457214 is about 882.1406279916.

The spelling of 686457214 in words is "six hundred eighty-six million, four hundred fifty-seven thousand, two hundred fourteen".