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68833 = 174049
BaseRepresentation
bin10000110011100001
310111102101
4100303201
54200313
61250401
7404452
oct206341
9114371
1068833
1147796
1233a01
132543b
141b129
15155dd
hex10ce1

68833 has 4 divisors (see below), whose sum is σ = 72900. Its totient is φ = 64768.

The previous prime is 68821. The next prime is 68863. The reversal of 68833 is 33886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33886 = 216943.

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 33489 = 188^2 + 183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68833 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (68813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008 + ... + 2041.

It is an arithmetic number, because the mean of its divisors is an integer number (18225).

268833 is an apocalyptic number.

It is an amenable number.

68833 is a deficient number, since it is larger than the sum of its proper divisors (4067).

68833 is a wasteful number, since it uses less digits than its factorization.

68833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066.

The product of its digits is 3456, while the sum is 28.

The square root of 68833 is about 262.3604390910. The cubic root of 68833 is about 40.9825426373.

It can be divided in two parts, 6883 and 3, that added together give a palindrome (6886).

The spelling of 68833 in words is "sixty-eight thousand, eight hundred thirty-three".

Divisors: 1 17 4049 68833