Base | Representation |
---|---|
bin | 1100100111101… |
… | …10111000001101 |
3 | 21101012200201011 |
4 | 12103312320031 |
5 | 204100300223 |
6 | 14301045221 |
7 | 2423604301 |
oct | 623667015 |
9 | 241180634 |
10 | 105868813 |
11 | 5483a896 |
12 | 2b556811 |
13 | 18c19b8b |
14 | 100bbd01 |
15 | 946380d |
hex | 64f6e0d |
105868813 has 4 divisors (see below), whose sum is σ = 109283968. Its totient is φ = 102453660.
The previous prime is 105868787. The next prime is 105868849. The reversal of 105868813 is 318868501.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 105868813 - 25 = 105868781 is a prime.
It is a super-2 number, since 2×1058688132 = 22416411132057938, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (105868853) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1707531 + ... + 1707592.
It is an arithmetic number, because the mean of its divisors is an integer number (27320992).
Almost surely, 2105868813 is an apocalyptic number.
It is an amenable number.
105868813 is a deficient number, since it is larger than the sum of its proper divisors (3415155).
105868813 is an equidigital number, since it uses as much as digits as its factorization.
105868813 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3415154.
The product of its (nonzero) digits is 46080, while the sum is 40.
The square root of 105868813 is about 10289.2571646354. The cubic root of 105868813 is about 473.0670299397.
The spelling of 105868813 in words is "one hundred five million, eight hundred sixty-eight thousand, eight hundred thirteen".
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