685499 has 8 divisors (see below), whose sum is σ = 715008. Its totient is φ = 656640.

The previous prime is 685493. The next prime is 685511. The reversal of 685499 is 994586.

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 685499 - 2¹² = 681403 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685499.

It is not an unprimeable number, because it can be changed into a prime (685493) 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, 3494 + ... + 3684.

It is an arithmetic number, because the mean of its divisors is an integer number (89376).

2⁶⁸⁵⁴⁹⁹ is an apocalyptic number.

685499 is a deficient number, since it is larger than the sum of its proper divisors (29509).

685499 is a wasteful number, since it uses less digits than its factorization.

685499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its digits is 77760, while the sum is 41.

The square root of 685499 is about 827.9486699065. The cubic root of 685499 is about 88.1729981806.

The spelling of 685499 in words is "six hundred eighty-five thousand, four hundred ninety-nine".