686023 has 8 divisors (see below), whose sum is σ = 746928. Its totient is φ = 626304.

The previous prime is 686011. The next prime is 686027. The reversal of 686023 is 320686.

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

It is a cyclic number.

It is not a de Polignac number, because 686023 - 2⁵ = 685991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236 + ... + 1702.

It is an arithmetic number, because the mean of its divisors is an integer number (93366).

2⁶⁸⁶⁰²³ is an apocalyptic number.

686023 is a deficient number, since it is larger than the sum of its proper divisors (60905).

686023 is a wasteful number, since it uses less digits than its factorization.

686023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 686023 is about 828.2650541946. The cubic root of 686023 is about 88.1954591341.

The spelling of 686023 in words is "six hundred eighty-six thousand, twenty-three".