Base | Representation |
---|---|
bin | 1100111110101110… |
… | …11100000011110001 |
3 | 122222122211002000012 |
4 | 12133113130003301 |
5 | 103232441021011 |
6 | 3111255104305 |
7 | 334455610130 |
oct | 63727340361 |
9 | 18878732005 |
10 | 6968688881 |
11 | 2a56709110 |
12 | 1425972095 |
13 | 87099225b |
14 | 4a1729917 |
15 | 2abbd1a8b |
hex | 19f5dc0f1 |
6968688881 has 32 divisors (see below), whose sum is σ = 9255859200. Its totient is φ = 5082281280.
The previous prime is 6968688871. The next prime is 6968688887. The reversal of 6968688881 is 1888868696.
It is a cyclic number.
It is not a de Polignac number, because 6968688881 - 226 = 6901580017 is a prime.
It is a super-2 number, since 2×69686888812 = 97125249440346064322, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (6968688887) by changing a digit.
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 31 ways as a sum of consecutive naturals, for example, 92735 + ... + 150123.
It is an arithmetic number, because the mean of its divisors is an integer number (289245600).
Almost surely, 26968688881 is an apocalyptic number.
It is an amenable number.
6968688881 is a deficient number, since it is larger than the sum of its proper divisors (2287170319).
6968688881 is a wasteful number, since it uses less digits than its factorization.
6968688881 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 57509.
The product of its digits is 63700992, while the sum is 68.
The square root of 6968688881 is about 83478.6732105871. The cubic root of 6968688881 is about 1910.0747283062.
The spelling of 6968688881 in words is "six billion, nine hundred sixty-eight million, six hundred eighty-eight thousand, eight hundred eighty-one".
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