686722323 has 32 divisors (see below), whose sum is σ = 1097961472. Its totient is φ = 373507200.

The previous prime is 686722319. The next prime is 686722363. The reversal of 686722323 is 323227686.

686722323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 686722323 - 2² = 686722319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (686722363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31065 + ... + 48357.

It is an arithmetic number, because the mean of its divisors is an integer number (34311296).

Almost surely, 2^686722323 is an apocalyptic number.

686722323 is a deficient number, since it is larger than the sum of its proper divisors (411239149).

686722323 is a wasteful number, since it uses less digits than its factorization.

686722323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17395.

The product of its digits is 145152, while the sum is 39.

The square root of 686722323 is about 26205.3872896395. The cubic root of 686722323 is about 882.2541739469.

The spelling of 686722323 in words is "six hundred eighty-six million, seven hundred twenty-two thousand, three hundred twenty-three".