685133 has 4 divisors (see below), whose sum is σ = 687648. Its totient is φ = 682620.

The previous prime is 685123. The next prime is 685141. The reversal of 685133 is 331586.

685133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 685133 - 2¹⁰ = 684109 is a prime.

It is a Duffinian number.

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 685133.

It is not an unprimeable number, because it can be changed into a prime (685103) 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, 791 + ... + 1412.

It is an arithmetic number, because the mean of its divisors is an integer number (171912).

2⁶⁸⁵¹³³ is an apocalyptic number.

It is an amenable number.

685133 is a deficient number, since it is larger than the sum of its proper divisors (2515).

685133 is a wasteful number, since it uses less digits than its factorization.

685133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its digits is 2160, while the sum is 26.

The square root of 685133 is about 827.7276122010. The cubic root of 685133 is about 88.1573030143.

It can be divided in two parts, 685 and 133, that added together give a palindrome (818).

The spelling of 685133 in words is "six hundred eighty-five thousand, one hundred thirty-three".