685011 has 4 divisors (see below), whose sum is σ = 913352. Its totient is φ = 456672.

The previous prime is 685001. The next prime is 685019. The reversal of 685011 is 110586.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 685011 - 2¹⁵ = 652243 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114166 + ... + 114171.

It is an arithmetic number, because the mean of its divisors is an integer number (228338).

2⁶⁸⁵⁰¹¹ is an apocalyptic number.

685011 is a deficient number, since it is larger than the sum of its proper divisors (228341).

685011 is a wasteful number, since it uses less digits than its factorization.

685011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228340.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 685011 is about 827.6539131787. The cubic root of 685011 is about 88.1520700501.

Adding to 685011 its reverse (110586), we get a palindrome (795597).

The spelling of 685011 in words is "six hundred eighty-five thousand, eleven".