Base | Representation |
---|---|
bin | 1101001100011111… |
… | …00010000111111001 |
3 | 200021200220101102111 |
4 | 12212033202013321 |
5 | 104002004311311 |
6 | 3130535532321 |
7 | 340356330433 |
oct | 64617420771 |
9 | 20250811374 |
10 | 7084057081 |
11 | 3005846a32 |
12 | 145852a0a1 |
13 | 88b856b6a |
14 | 4b2b9b653 |
15 | 2b6dbed21 |
hex | 1a63e21f9 |
7084057081 has 2 divisors, whose sum is σ = 7084057082. Its totient is φ = 7084057080.
The previous prime is 7084057073. The next prime is 7084057129. The reversal of 7084057081 is 1807504807.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 7075501456 + 8555625 = 84116^2 + 2925^2 .
It is an emirp because it is prime and its reverse (1807504807) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 7084057081 - 23 = 7084057073 is a prime.
It is a super-2 number, since 2×70840570812 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (7084057181) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3542028540 + 3542028541.
It is an arithmetic number, because the mean of its divisors is an integer number (3542028541).
Almost surely, 27084057081 is an apocalyptic number.
It is an amenable number.
7084057081 is a deficient number, since it is larger than the sum of its proper divisors (1).
7084057081 is an equidigital number, since it uses as much as digits as its factorization.
7084057081 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 62720, while the sum is 40.
The square root of 7084057081 is about 84166.8407450345. The cubic root of 7084057081 is about 1920.5576614534.
The spelling of 7084057081 in words is "seven billion, eighty-four million, fifty-seven thousand, eighty-one".
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