Base | Representation |
---|---|
bin | 1101000000111111… |
… | …00011100101100001 |
3 | 200000222101120001210 |
4 | 12200133203211201 |
5 | 103302311002311 |
6 | 3113212220333 |
7 | 335105366256 |
oct | 64037434541 |
9 | 20028346053 |
10 | 6987594081 |
11 | 2a66350946 |
12 | 143016a6a9 |
13 | 874881270 |
14 | 4a404b42d |
15 | 2ad6b83a6 |
hex | 1a07e3961 |
6987594081 has 16 divisors (see below), whose sum is σ = 10046695680. Its totient is φ = 4294389120.
The previous prime is 6987594073. The next prime is 6987594101. The reversal of 6987594081 is 1804957896.
It is not a de Polignac number, because 6987594081 - 23 = 6987594073 is a prime.
It is a super-2 number, since 2×69875940812 = 97652942081652469122, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (6987594001) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88041 + ... + 147398.
It is an arithmetic number, because the mean of its divisors is an integer number (627918480).
Almost surely, 26987594081 is an apocalyptic number.
It is an amenable number.
6987594081 is a deficient number, since it is larger than the sum of its proper divisors (3059101599).
6987594081 is a wasteful number, since it uses less digits than its factorization.
6987594081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 236216.
The product of its (nonzero) digits is 4354560, while the sum is 57.
The square root of 6987594081 is about 83591.8302287969. The cubic root of 6987594081 is about 1911.8004350200.
The spelling of 6987594081 in words is "six billion, nine hundred eighty-seven million, five hundred ninety-four thousand, eighty-one".
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