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68365 = 5112113
BaseRepresentation
bin10000101100001101
310110210001
4100230031
54141430
61244301
7403213
oct205415
9113701
1068365
1147400
1233691
132516b
141acb3
15153ca
hex10b0d

68365 has 12 divisors (see below), whose sum is σ = 90972. Its totient is φ = 49280.

The previous prime is 68351. The next prime is 68371. The reversal of 68365 is 56386.

It can be written as a sum of positive squares in 2 ways, for example, as 9801 + 58564 = 99^2 + 242^2 .

It is not a de Polignac number, because 68365 - 29 = 67853 is a prime.

It is a Duffinian number.

68365 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 549 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (7581).

268365 is an apocalyptic number.

It is an amenable number.

68365 is a deficient number, since it is larger than the sum of its proper divisors (22607).

68365 is a wasteful number, since it uses less digits than its factorization.

68365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 129 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 68365 is about 261.4670151281. The cubic root of 68365 is about 40.8894503550.

The spelling of 68365 in words is "sixty-eight thousand, three hundred sixty-five".

Divisors: 1 5 11 55 113 121 565 605 1243 6215 13673 68365