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68345 = 513669
BaseRepresentation
bin10000101011111001
310110202022
4100223321
54141340
61244225
7403154
oct205371
9113668
1068345
1147392
1233675
1325154
141ac9b
15153b5
hex10af9

68345 has 4 divisors (see below), whose sum is σ = 82020. Its totient is φ = 54672.

The previous prime is 68329. The next prime is 68351. The reversal of 68345 is 54386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38416 + 29929 = 196^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 68345 - 24 = 68329 is a prime.

It is a Curzon number.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6830 + ... + 6839.

It is an arithmetic number, because the mean of its divisors is an integer number (20505).

268345 is an apocalyptic number.

It is an amenable number.

68345 is a deficient number, since it is larger than the sum of its proper divisors (13675).

68345 is a wasteful number, since it uses less digits than its factorization.

68345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13674.

The product of its digits is 2880, while the sum is 26.

The square root of 68345 is about 261.4287665885. The cubic root of 68345 is about 40.8854625993.

The spelling of 68345 in words is "sixty-eight thousand, three hundred forty-five".

Divisors: 1 5 13669 68345