686485 has 8 divisors (see below), whose sum is σ = 828576. Its totient is φ = 546000.

The previous prime is 686479. The next prime is 686503. The reversal of 686485 is 584686.

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

It is not a de Polignac number, because 686485 - 2⁵ = 686453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982 + ... + 1528.

It is an arithmetic number, because the mean of its divisors is an integer number (103572).

2⁶⁸⁶⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

686485 is a deficient number, since it is larger than the sum of its proper divisors (142091).

686485 is a wasteful number, since it uses less digits than its factorization.

686485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803.

The product of its digits is 46080, while the sum is 37.

The square root of 686485 is about 828.5439034837. The cubic root of 686485 is about 88.2152530083.

The spelling of 686485 in words is "six hundred eighty-six thousand, four hundred eighty-five".