685274 has 16 divisors (see below), whose sum is σ = 1078056. Its totient is φ = 326400.

The previous prime is 685271. The next prime is 685297. The reversal of 685274 is 472586.

It can be written as a sum of positive squares in 4 ways, for example, as 243049 + 442225 = 493^2 + 665^2 .

It is a d-powerful number, because it can be written as 6 + 8³ + 2¹⁹ + 5⁷ + 7⁵ + 4⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 685274.

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 685274.

It is not an unprimeable number, because it can be changed into a prime (685271) 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 7 ways as a sum of consecutive naturals, for example, 4934 + ... + 5070.

2⁶⁸⁵²⁷⁴ is an apocalyptic number.

685274 is a deficient number, since it is larger than the sum of its proper divisors (392782).

685274 is a wasteful number, since it uses less digits than its factorization.

685274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241.

The product of its digits is 13440, while the sum is 32.

The square root of 685274 is about 827.8127807663. The cubic root of 685274 is about 88.1633501746.

It can be divided in two parts, 685 and 274, that added together give a palindrome (959).

The spelling of 685274 in words is "six hundred eighty-five thousand, two hundred seventy-four".