686342 has 8 divisors (see below), whose sum is σ = 1033032. Its totient is φ = 342000.

The previous prime is 686339. The next prime is 686353. The reversal of 686342 is 243686.

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

It is a plaindrome in base 7.

It is a zygodrome in base 7.

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, 842 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (129129).

2⁶⁸⁶³⁴² is an apocalyptic number.

686342 is a deficient number, since it is larger than the sum of its proper divisors (346690).

686342 is a wasteful number, since it uses less digits than its factorization.

686342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174.

The product of its digits is 6912, while the sum is 29.

The square root of 686342 is about 828.4576030190. The cubic root of 686342 is about 88.2091272822.

The spelling of 686342 in words is "six hundred eighty-six thousand, three hundred forty-two".