Base | Representation |
---|---|
bin | 1010001101011… |
… | …01000011110001 |
3 | 12222011010210200 |
4 | 11012231003301 |
5 | 133411043010 |
6 | 12255345413 |
7 | 2056646343 |
oct | 506550361 |
9 | 188133720 |
10 | 85643505 |
11 | 44386262 |
12 | 24822269 |
13 | 1498803c |
14 | b535293 |
15 | 77bacc0 |
hex | 51ad0f1 |
85643505 has 24 divisors (see below), whose sum is σ = 150334080. Its totient is φ = 45096480.
The previous prime is 85643497. The next prime is 85643521. The reversal of 85643505 is 50534658.
85643505 is a `hidden beast` number, since 8 + 5 + 643 + 5 + 0 + 5 = 666.
It is not a de Polignac number, because 85643505 - 23 = 85643497 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 85643505.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8491 + ... + 15600.
It is an arithmetic number, because the mean of its divisors is an integer number (6263920).
Almost surely, 285643505 is an apocalyptic number.
It is an amenable number.
85643505 is a deficient number, since it is larger than the sum of its proper divisors (64690575).
85643505 is a wasteful number, since it uses less digits than its factorization.
85643505 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24181 (or 24178 counting only the distinct ones).
The product of its (nonzero) digits is 72000, while the sum is 36.
The square root of 85643505 is about 9254.3776127841. The cubic root of 85643505 is about 440.7897404214.
The spelling of 85643505 in words is "eighty-five million, six hundred forty-three thousand, five hundred five".
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