685005 has 8 divisors (see below), whose sum is σ = 1096032. Its totient is φ = 365328.

The previous prime is 685001. The next prime is 685019. The reversal of 685005 is 500586.

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

It is not a de Polignac number, because 685005 - 2² = 685001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22819 + ... + 22848.

It is an arithmetic number, because the mean of its divisors is an integer number (137004).

2⁶⁸⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

685005 is a deficient number, since it is larger than the sum of its proper divisors (411027).

685005 is a wasteful number, since it uses less digits than its factorization.

685005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45675.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 685005 is about 827.6502884673. The cubic root of 685005 is about 88.1518126752.

The spelling of 685005 in words is "six hundred eighty-five thousand, five".