Search a number
-
+
685003 = 1162273
BaseRepresentation
bin10100111001111001011
31021210122111
42213033023
5133410003
622403151
75552044
oct2471713
91253574
10685003
11428720
122904b7
131aca37
1413b8cb
15d7e6d
hexa73cb

685003 has 4 divisors (see below), whose sum is σ = 747288. Its totient is φ = 622720.

The previous prime is 685001. The next prime is 685019. The reversal of 685003 is 300586.

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

It is a cyclic number.

It is not a de Polignac number, because 685003 - 21 = 685001 is a prime.

It is a super-2 number, since 2×6850032 = 938458220018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

685003 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (685001) 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, 31126 + ... + 31147.

It is an arithmetic number, because the mean of its divisors is an integer number (186822).

2685003 is an apocalyptic number.

685003 is a deficient number, since it is larger than the sum of its proper divisors (62285).

685003 is a wasteful number, since it uses less digits than its factorization.

685003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62284.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 685003 is about 827.6490802266. The cubic root of 685003 is about 88.1517268832.

Adding to 685003 its reverse (300586), we get a palindrome (985589).

The spelling of 685003 in words is "six hundred eighty-five thousand, three".

Divisors: 1 11 62273 685003