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1666050275 = 5266642011
BaseRepresentation
bin110001101001101…
…1110100011100011
311022002222010022202
41203103132203203
511403002102100
6433153123415
756200123301
oct14323364343
94262863282
101666050275
1178549525a
123a5b5956b
13207220886
1411b3a9271
159b3e97d5
hex634de8e3

1666050275 has 6 divisors (see below), whose sum is σ = 2065902372. Its totient is φ = 1332840200.

The previous prime is 1666050259. The next prime is 1666050307. The reversal of 1666050275 is 5720506661.

It is not a de Polignac number, because 1666050275 - 24 = 1666050259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33320981 + ... + 33321030.

It is an arithmetic number, because the mean of its divisors is an integer number (344317062).

Almost surely, 21666050275 is an apocalyptic number.

1666050275 is a deficient number, since it is larger than the sum of its proper divisors (399852097).

1666050275 is an equidigital number, since it uses as much as digits as its factorization.

1666050275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66642021 (or 66642016 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1666050275 is about 40817.2791229401. The cubic root of 1666050275 is about 1185.4849208482.

The spelling of 1666050275 in words is "one billion, six hundred sixty-six million, fifty thousand, two hundred seventy-five".

Divisors: 1 5 25 66642011 333210055 1666050275