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68223 = 322741
BaseRepresentation
bin10000101001111111
310110120210
4100221333
54140343
61243503
7402621
oct205177
9113523
1068223
1147291
1233593
132508c
141ac11
1515333
hex10a7f

68223 has 4 divisors (see below), whose sum is σ = 90968. Its totient is φ = 45480.

The previous prime is 68219. The next prime is 68227. The reversal of 68223 is 32286.

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

It is an interprime number because it is at equal distance from previous prime (68219) and next prime (68227).

It is not a de Polignac number, because 68223 - 22 = 68219 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68227) 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, 11368 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (22742).

268223 is an apocalyptic number.

68223 is a deficient number, since it is larger than the sum of its proper divisors (22745).

68223 is a wasteful number, since it uses less digits than its factorization.

68223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22744.

The product of its digits is 576, while the sum is 21.

The square root of 68223 is about 261.1953292079. The cubic root of 68223 is about 40.8611204267.

Subtracting from 68223 its reverse (32286), we obtain a cube (35937 = 333).

The spelling of 68223 in words is "sixty-eight thousand, two hundred twenty-three".

Divisors: 1 3 22741 68223