Base | Representation |
---|---|
bin | 1000000111011… |
… | …10010111000001 |
3 | 11202010002022112 |
4 | 10003232113001 |
5 | 114412211220 |
6 | 10431145105 |
7 | 1454500040 |
oct | 403562701 |
9 | 152102275 |
10 | 68085185 |
11 | 35483453 |
12 | 1a975195 |
13 | 1114b0bc |
14 | 9084557 |
15 | 5e9d5c5 |
hex | 40ee5c1 |
68085185 has 16 divisors (see below), whose sum is σ = 96595200. Its totient is φ = 45076416.
The previous prime is 68085181. The next prime is 68085191. The reversal of 68085185 is 58158086.
It is not a de Polignac number, because 68085185 - 22 = 68085181 is a prime.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (68085181) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32525 + ... + 34554.
It is an arithmetic number, because the mean of its divisors is an integer number (6037200).
Almost surely, 268085185 is an apocalyptic number.
It is an amenable number.
68085185 is a deficient number, since it is larger than the sum of its proper divisors (28510015).
68085185 is a wasteful number, since it uses less digits than its factorization.
68085185 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 67120.
The product of its (nonzero) digits is 76800, while the sum is 41.
The square root of 68085185 is about 8251.3747339459. The cubic root of 68085185 is about 408.3358781830.
The spelling of 68085185 in words is "sixty-eight million, eighty-five thousand, one hundred eighty-five".
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