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68147375 = 536779103
BaseRepresentation
bin1000000111111…
…01100010101111
311202020020121212
410003331202233
5114421204000
610432345035
71455146252
oct403754257
9152206555
1068147375
113551614a
121a9a517b
13111704ba
14909d099
155eb1c35
hex40fd8af

68147375 has 32 divisors (see below), whose sum is σ = 88258560. Its totient is φ = 52509600.

The previous prime is 68147353. The next prime is 68147381. The reversal of 68147375 is 57374186.

It is not a de Polignac number, because 68147375 - 28 = 68147119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661574 + ... + 661676.

It is an arithmetic number, because the mean of its divisors is an integer number (2758080).

Almost surely, 268147375 is an apocalyptic number.

68147375 is a deficient number, since it is larger than the sum of its proper divisors (20111185).

68147375 is a wasteful number, since it uses less digits than its factorization.

68147375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 254 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 68147375 is about 8255.1423367499. The cubic root of 68147375 is about 408.4601669952.

The spelling of 68147375 in words is "sixty-eight million, one hundred forty-seven thousand, three hundred seventy-five".

Divisors: 1 5 25 67 79 103 125 335 395 515 1675 1975 2575 5293 6901 8137 8375 9875 12875 26465 34505 40685 132325 172525 203425 545179 661625 862625 1017125 2725895 13629475 68147375