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6680308817 = 73134334841
BaseRepresentation
bin1100011100010110…
…10110110001010001
3122020120011211221002
412032023112301101
5102140124340232
63022514111345
7324354455000
oct61613266121
918216154832
106680308817
112918950986
12136527b555
13826002470
144752dcc37
1529171ab62
hex18e2d6c51

6680308817 has 32 divisors (see below), whose sum is σ = 8585068800. Its totient is φ = 5162451840.

The previous prime is 6680308769. The next prime is 6680308829. The reversal of 6680308817 is 7188030866.

It is not a de Polignac number, because 6680308817 - 28 = 6680308561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6680308417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174317 + ... + 209157.

It is an arithmetic number, because the mean of its divisors is an integer number (268283400).

Almost surely, 26680308817 is an apocalyptic number.

It is an amenable number.

6680308817 is a deficient number, since it is larger than the sum of its proper divisors (1904759983).

6680308817 is a wasteful number, since it uses less digits than its factorization.

6680308817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34918 (or 34904 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 6680308817 is about 81733.1561668825. The cubic root of 6680308817 is about 1883.3549585808.

The spelling of 6680308817 in words is "six billion, six hundred eighty million, three hundred eight thousand, eight hundred seventeen".

Divisors: 1 7 13 43 49 91 301 343 559 637 2107 3913 4459 14749 27391 34841 191737 243887 452933 1498163 1707209 3170531 10487141 11950463 19476119 22193717 73409987 136332833 155356019 513869909 954329831 6680308817