Base | Representation |
---|---|
bin | 1000001100111… |
… | …10011010101101 |
3 | 11210110201112010 |
4 | 10012132122231 |
5 | 120103300232 |
6 | 10454431433 |
7 | 1463562336 |
oct | 406363255 |
9 | 153421463 |
10 | 68806317 |
11 | 35926228 |
12 | 1b062579 |
13 | 113413c8 |
14 | 91d128d |
15 | 60920cc |
hex | 419e6ad |
68806317 has 16 divisors (see below), whose sum is σ = 95989248. Its totient is φ = 43758000.
The previous prime is 68806307. The next prime is 68806343. The reversal of 68806317 is 71360886.
It is not a de Polignac number, because 68806317 - 214 = 68789933 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68806307) 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, 29442 + ... + 31692.
It is an arithmetic number, because the mean of its divisors is an integer number (5999328).
Almost surely, 268806317 is an apocalyptic number.
It is an amenable number.
68806317 is a deficient number, since it is larger than the sum of its proper divisors (27182931).
68806317 is a wasteful number, since it uses less digits than its factorization.
68806317 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2720.
The product of its (nonzero) digits is 48384, while the sum is 39.
The square root of 68806317 is about 8294.9573235792. The cubic root of 68806317 is about 409.7724634764.
The spelling of 68806317 in words is "sixty-eight million, eight hundred six thousand, three hundred seventeen".
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