Base | Representation |
---|---|
bin | 1000001000010… |
… | …01010101111001 |
3 | 11202022200220212 |
4 | 10010021111321 |
5 | 114424230310 |
6 | 10433400505 |
7 | 1455440204 |
oct | 404112571 |
9 | 152280825 |
10 | 68195705 |
11 | 35549496 |
12 | 1aa09135 |
13 | 111894b6 |
14 | 90b293b |
15 | 5ec1205 |
hex | 4109579 |
68195705 has 16 divisors (see below), whose sum is σ = 83692224. Its totient is φ = 53332800.
The previous prime is 68195641. The next prime is 68195707. The reversal of 68195705 is 50759186.
It is not a de Polignac number, because 68195705 - 26 = 68195641 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68195707) by changing a digit.
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 15 ways as a sum of consecutive naturals, for example, 41102 + ... + 42728.
It is an arithmetic number, because the mean of its divisors is an integer number (5230764).
Almost surely, 268195705 is an apocalyptic number.
It is an amenable number.
68195705 is a deficient number, since it is larger than the sum of its proper divisors (15496519).
68195705 is a wasteful number, since it uses less digits than its factorization.
68195705 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1816.
The product of its (nonzero) digits is 75600, while the sum is 41.
The square root of 68195705 is about 8258.0690842351. The cubic root of 68195705 is about 408.5567039246.
The spelling of 68195705 in words is "sixty-eight million, one hundred ninety-five thousand, seven hundred five".
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