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68321 = 116211
BaseRepresentation
bin10000101011100001
310110201102
4100223201
54141241
61244145
7403121
oct205341
9113642
1068321
1147370
1233655
1325136
141ac81
151539b
hex10ae1

68321 has 4 divisors (see below), whose sum is σ = 74544. Its totient is φ = 62100.

The previous prime is 68311. The next prime is 68329. The reversal of 68321 is 12386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68293 and 68302.

It is not an unprimeable number, because it can be changed into a prime (68329) 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, 3095 + ... + 3116.

It is an arithmetic number, because the mean of its divisors is an integer number (18636).

268321 is an apocalyptic number.

It is an amenable number.

68321 is a deficient number, since it is larger than the sum of its proper divisors (6223).

68321 is a wasteful number, since it uses less digits than its factorization.

68321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6222.

The product of its digits is 288, while the sum is 20.

The square root of 68321 is about 261.3828609530. The cubic root of 68321 is about 40.8806762653.

The spelling of 68321 in words is "sixty-eight thousand, three hundred twenty-one".

Divisors: 1 11 6211 68321