Base | Representation |
---|---|
bin | 1000001100101… |
… | …01100110001001 |
3 | 11210101212221220 |
4 | 10012111212021 |
5 | 120101121220 |
6 | 10453552253 |
7 | 1463352111 |
oct | 406254611 |
9 | 153355856 |
10 | 68770185 |
11 | 35901070 |
12 | 1b045689 |
13 | 1132ab23 |
14 | 91c2041 |
15 | 6086540 |
hex | 4195989 |
68770185 has 32 divisors (see below), whose sum is σ = 127101312. Its totient is φ = 31380480.
The previous prime is 68770159. The next prime is 68770217. The reversal of 68770185 is 58107786.
It is not a de Polignac number, because 68770185 - 27 = 68770057 is a prime.
It is a Curzon number.
It is an unprimeable number.
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 in 31 ways as a sum of consecutive naturals, for example, 9454 + ... + 15063.
It is an arithmetic number, because the mean of its divisors is an integer number (3971916).
Almost surely, 268770185 is an apocalyptic number.
It is an amenable number.
68770185 is a deficient number, since it is larger than the sum of its proper divisors (58331127).
68770185 is a wasteful number, since it uses less digits than its factorization.
68770185 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24553.
The product of its (nonzero) digits is 94080, while the sum is 42.
The square root of 68770185 is about 8292.7790878571. The cubic root of 68770185 is about 409.7007234981.
It can be divided in two parts, 687701 and 85, that added together give a palindrome (687786).
The spelling of 68770185 in words is "sixty-eight million, seven hundred seventy thousand, one hundred eighty-five".
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