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68864075 = 52719139149
BaseRepresentation
bin1000001101011…
…00100001001011
311210120122202022
410012230201023
5120112122300
610455555055
71464222620
oct406544113
9153518668
1068864075
1135965665
121b08ba8b
1311361797
149208347
1560a4285
hex41ac84b

68864075 has 48 divisors (see below), whose sum is σ = 104160000. Its totient is φ = 44115840.

The previous prime is 68864057. The next prime is 68864111. The reversal of 68864075 is 57046886.

It is not a de Polignac number, because 68864075 - 26 = 68864011 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 462101 + ... + 462249.

It is an arithmetic number, because the mean of its divisors is an integer number (2170000).

Almost surely, 268864075 is an apocalyptic number.

68864075 is a deficient number, since it is larger than the sum of its proper divisors (35295925).

68864075 is a wasteful number, since it uses less digits than its factorization.

68864075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 68864075 is about 8298.4381060535. The cubic root of 68864075 is about 409.8870896698.

The spelling of 68864075 in words is "sixty-eight million, eight hundred sixty-four thousand, seventy-five".

Divisors: 1 5 7 19 25 35 95 133 139 149 175 475 665 695 745 973 1043 2641 2831 3325 3475 3725 4865 5215 13205 14155 18487 19817 20711 24325 26075 66025 70775 92435 99085 103555 144977 393509 462175 495425 517775 724885 1967545 2754563 3624425 9837725 13772815 68864075