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68465 = 513693
BaseRepresentation
bin10000101101110001
310110220202
4100231301
54142330
61244545
7403415
oct205561
9113822
1068465
1147491
1233755
1325217
141ad45
1515445
hex10b71

68465 has 4 divisors (see below), whose sum is σ = 82164. Its totient is φ = 54768.

The previous prime is 68449. The next prime is 68473. The reversal of 68465 is 56486.

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 53824 + 14641 = 232^2 + 121^2 .

It is a cyclic number.

It is not a de Polignac number, because 68465 - 24 = 68449 is a prime.

It is a super-3 number, since 3×684653 = 962780071333875, which contains 333 as substring.

It is a Duffinian number.

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, 6842 + ... + 6851.

It is an arithmetic number, because the mean of its divisors is an integer number (20541).

268465 is an apocalyptic number.

It is an amenable number.

68465 is a deficient number, since it is larger than the sum of its proper divisors (13699).

68465 is a wasteful number, since it uses less digits than its factorization.

68465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13698.

The product of its digits is 5760, while the sum is 29.

The square root of 68465 is about 261.6581739598. The cubic root of 68465 is about 40.9093774765.

The spelling of 68465 in words is "sixty-eight thousand, four hundred sixty-five".

Divisors: 1 5 13693 68465