Base | Representation |
---|---|
bin | 111111111101011001… |
… | …101000000010011000 |
3 | 20120021010202021221122 |
4 | 333331121220002120 |
5 | 2111122010101210 |
6 | 51314350024412 |
7 | 4650565125665 |
oct | 777531500230 |
9 | 216233667848 |
10 | 68675862680 |
11 | 27141809107 |
12 | 113874a8108 |
13 | 662600b049 |
14 | 3476c10a6c |
15 | 1bbe253b55 |
hex | ffd668098 |
68675862680 has 64 divisors (see below), whose sum is σ = 155993286240. Its totient is φ = 27209792512.
The previous prime is 68675862677. The next prime is 68675862701. The reversal of 68675862680 is 8626857686.
It is a super-2 number, since 2×686758626802 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769564 + ... + 1807956.
Almost surely, 268675862680 is an apocalyptic number.
It is an amenable number.
68675862680 is an abundant number, since it is smaller than the sum of its proper divisors (87317423560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68675862680 is a wasteful number, since it uses less digits than its factorization.
68675862680 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 38828 (or 38824 counting only the distinct ones).
The product of its (nonzero) digits is 46448640, while the sum is 62.
The spelling of 68675862680 in words is "sixty-eight billion, six hundred seventy-five million, eight hundred sixty-two thousand, six hundred eighty".
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