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6808230145 = 52149363353
BaseRepresentation
bin1100101011100110…
…10101100100000001
3122120110212221000001
412111303111210001
5102420401331040
63043324000001
7330500000323
oct62563254401
918513787001
106808230145
112984083092
1213a0090001
13846670a62
144882bb613
1529ca8859a
hex195cd5901

6808230145 has 8 divisors (see below), whose sum is σ = 8170385256. Its totient is φ = 5446244736.

The previous prime is 6808230139. The next prime is 6808230179. The reversal of 6808230145 is 5410328086.

It is a happy number.

6808230145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 825122+1.

It can be written as a sum of positive squares in 4 ways, for example, as 595164816 + 6213065329 = 24396^2 + 78823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6808230145 - 29 = 6808229633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75789 + ... + 139141.

It is an arithmetic number, because the mean of its divisors is an integer number (1021298157).

Almost surely, 26808230145 is an apocalyptic number.

It is an amenable number.

6808230145 is a deficient number, since it is larger than the sum of its proper divisors (1362155111).

6808230145 is a wasteful number, since it uses less digits than its factorization.

6808230145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84851.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 6808230145 is about 82512.0000060597. Note that the first 5 decimals coincide. The cubic root of 6808230145 is about 1895.3004951356.

The spelling of 6808230145 in words is "six billion, eight hundred eight million, two hundred thirty thousand, one hundred forty-five".

Divisors: 1 5 21493 63353 107465 316765 1361646029 6808230145