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68319075 = 3521182811
BaseRepresentation
bin1000001001001…
…11011101100011
311202112222011010
410010213131203
5114442202300
610440152003
71456462656
oct404473543
9152488133
1068319075
1135623150
121aa68603
13112006b6
14910589d
155ee7a50
hex4127763

68319075 has 24 divisors (see below), whose sum is σ = 123224256. Its totient is φ = 33124000.

The previous prime is 68319049. The next prime is 68319077. The reversal of 68319075 is 57091386.

It is not a de Polignac number, because 68319075 - 26 = 68319011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68319077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40581 + ... + 42230.

It is an arithmetic number, because the mean of its divisors is an integer number (5134344).

Almost surely, 268319075 is an apocalyptic number.

68319075 is a deficient number, since it is larger than the sum of its proper divisors (54905181).

68319075 is a wasteful number, since it uses less digits than its factorization.

68319075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82835 (or 82830 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 68319075 is about 8265.5353728600. The cubic root of 68319075 is about 408.8029231290.

The spelling of 68319075 in words is "sixty-eight million, three hundred nineteen thousand, seventy-five".

Divisors: 1 3 5 11 15 25 33 55 75 165 275 825 82811 248433 414055 910921 1242165 2070275 2732763 4554605 6210825 13663815 22773025 68319075