685461 has 12 divisors (see below), whose sum is σ = 1063392. Its totient is φ = 391608.

The previous prime is 685459. The next prime is 685471. The reversal of 685461 is 164586.

It is not a de Polignac number, because 685461 - 2¹ = 685459 is a prime.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 685461.

It is not an unprimeable number, because it can be changed into a prime (685471) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2185 + ... + 2478.

It is an arithmetic number, because the mean of its divisors is an integer number (88616).

2⁶⁸⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

685461 is a deficient number, since it is larger than the sum of its proper divisors (377931).

685461 is a wasteful number, since it uses less digits than its factorization.

685461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4680 (or 4673 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 685461 is about 827.9257213060. The cubic root of 685461 is about 88.1713688878.

The spelling of 685461 in words is "six hundred eighty-five thousand, four hundred sixty-one".