Base | Representation |
---|---|
bin | 11000100111010… |
… | …00001000001101 |
3 | 112101111211220202 |
4 | 30103220020031 |
5 | 410324043233 |
6 | 32253223245 |
7 | 5054660201 |
oct | 1423501015 |
9 | 471454822 |
10 | 206471693 |
11 | a660326a |
12 | 59191b25 |
13 | 33a11bcc |
14 | 1d5c8b01 |
15 | 131d6be8 |
hex | c4e820d |
206471693 has 2 divisors, whose sum is σ = 206471694. Its totient is φ = 206471692.
The previous prime is 206471659. The next prime is 206471701. The reversal of 206471693 is 396174602.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 182871529 + 23600164 = 13523^2 + 4858^2 .
It is a cyclic number.
It is not a de Polignac number, because 206471693 - 216 = 206406157 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (206471653) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103235846 + 103235847.
It is an arithmetic number, because the mean of its divisors is an integer number (103235847).
Almost surely, 2206471693 is an apocalyptic number.
It is an amenable number.
206471693 is a deficient number, since it is larger than the sum of its proper divisors (1).
206471693 is an equidigital number, since it uses as much as digits as its factorization.
206471693 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 54432, while the sum is 38.
The square root of 206471693 is about 14369.1229029471. The cubic root of 206471693 is about 591.0444899575.
The spelling of 206471693 in words is "two hundred six million, four hundred seventy-one thousand, six hundred ninety-three".
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