686807223 has 8 divisors (see below), whose sum is σ = 937039488. Its totient is φ = 447223224.

The previous prime is 686807189. The next prime is 686807227. The reversal of 686807223 is 322708686.

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

It is not a de Polignac number, because 686807223 - 2¹⁰ = 686806199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686807227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661915 + ... + 2662172.

It is an arithmetic number, because the mean of its divisors is an integer number (117129936).

Almost surely, 2^686807223 is an apocalyptic number.

686807223 is a deficient number, since it is larger than the sum of its proper divisors (250232265).

686807223 is a wasteful number, since it uses less digits than its factorization.

686807223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324133.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 686807223 is about 26207.0071354972. The cubic root of 686807223 is about 882.2905303655.

The spelling of 686807223 in words is "six hundred eighty-six million, eight hundred seven thousand, two hundred twenty-three".