Base | Representation |
---|---|
bin | 111111111001001011… |
… | …000011000111011011 |
3 | 20120002012021200010120 |
4 | 333321023003013123 |
5 | 2111000330320241 |
6 | 51303333444323 |
7 | 4646044206450 |
oct | 777113030733 |
9 | 216065250116 |
10 | 68604932571 |
11 | 2710577228a |
12 | 113677a06a3 |
13 | 6614405076 |
14 | 346b629827 |
15 | 1bb7de2666 |
hex | ff92c31db |
68604932571 has 64 divisors (see below), whose sum is σ = 109369958400. Its totient is φ = 37428019200.
The previous prime is 68604932569. The next prime is 68604932587. The reversal of 68604932571 is 17523940686.
68604932571 is a nontrivial binomial coefficient, being equal to C(370419, 2).
It is not a de Polignac number, because 68604932571 - 21 = 68604932569 is a prime.
It is not an unprimeable number, because it can be changed into a prime (68604932531) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32966251 + ... + 32968331.
It is an arithmetic number, because the mean of its divisors is an integer number (1708905600).
It is a 2-persistent number, because it is pandigital, and so is 2⋅68604932571 = 137209865142, but 3⋅68604932571 = 205814797713 is not.
Almost surely, 268604932571 is an apocalyptic number.
68604932571 is the 370418-th triangular number.
68604932571 is a deficient number, since it is larger than the sum of its proper divisors (40765025829).
68604932571 is a wasteful number, since it uses less digits than its factorization.
68604932571 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2780.
The product of its (nonzero) digits is 2177280, while the sum is 51.
The spelling of 68604932571 in words is "sixty-eight billion, six hundred four million, nine hundred thirty-two thousand, five hundred seventy-one".
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