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685244 = 22724473
BaseRepresentation
bin10100111010010111100
31021210222102
42213102330
5133411434
622404232
75552540
oct2472274
91253872
10685244
1142891a
12290678
131acb91
1413ba20
15d807e
hexa74bc

685244 has 12 divisors (see below), whose sum is σ = 1370544. Its totient is φ = 293664.

The previous prime is 685231. The next prime is 685247. The reversal of 685244 is 442586.

685244 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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 685244.

It is not an unprimeable number, because it can be changed into a prime (685247) 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 3 ways as a sum of consecutive naturals, for example, 12209 + ... + 12264.

It is an arithmetic number, because the mean of its divisors is an integer number (114212).

2685244 is an apocalyptic number.

It is an amenable number.

685244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685244 is a wasteful number, since it uses less digits than its factorization.

685244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24484 (or 24482 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 685244 is about 827.7946605288. The cubic root of 685244 is about 88.1620636142.

It can be divided in two parts, 685 and 244, that added together give a palindrome (929).

The spelling of 685244 in words is "six hundred eighty-five thousand, two hundred forty-four".

Divisors: 1 2 4 7 14 28 24473 48946 97892 171311 342622 685244