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65895 = 3523191
BaseRepresentation
bin10000000101100111
310100101120
4100011213
54102040
61225023
7363054
oct200547
9110346
1065895
1145565
1232173
1323cbb
141a02b
15147d0
hex10167

65895 has 16 divisors (see below), whose sum is σ = 110592. Its totient is φ = 33440.

The previous prime is 65881. The next prime is 65899. The reversal of 65895 is 59856.

Added to its reverse (59856) it gives a triangular number (125751 = T501).

It is not a de Polignac number, because 65895 - 26 = 65831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65899) 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 15 ways as a sum of consecutive naturals, for example, 250 + ... + 440.

It is an arithmetic number, because the mean of its divisors is an integer number (6912).

265895 is an apocalyptic number.

65895 is a deficient number, since it is larger than the sum of its proper divisors (44697).

65895 is a wasteful number, since it uses less digits than its factorization.

65895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222.

The product of its digits is 10800, while the sum is 33.

The square root of 65895 is about 256.7002142578. The cubic root of 65895 is about 40.3909580130.

Adding to 65895 its reverse (59856), we get a triangular number (125751 = T501).

The spelling of 65895 in words is "sixty-five thousand, eight hundred ninety-five".

Divisors: 1 3 5 15 23 69 115 191 345 573 955 2865 4393 13179 21965 65895