Base | Representation |
---|---|
bin | 1000001100010… |
… | …10100101110001 |
3 | 11210022121010021 |
4 | 10012022211301 |
5 | 120043200410 |
6 | 10453003441 |
7 | 1463103511 |
oct | 406124561 |
9 | 153277107 |
10 | 68725105 |
11 | 35880209 |
12 | 1b023581 |
13 | 11313457 |
14 | 91ad841 |
15 | 6077eda |
hex | 418a971 |
68725105 has 8 divisors (see below), whose sum is σ = 82664064. Its totient is φ = 54850800.
The previous prime is 68725103. The next prime is 68725117. The reversal of 68725105 is 50152786.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 68725105 - 21 = 68725103 is a prime.
It is a super-2 number, since 2×687251052 = 9446280114522050, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68725103) 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 7 ways as a sum of consecutive naturals, for example, 13791 + ... + 18100.
It is an arithmetic number, because the mean of its divisors is an integer number (10333008).
Almost surely, 268725105 is an apocalyptic number.
It is an amenable number.
68725105 is a deficient number, since it is larger than the sum of its proper divisors (13938959).
68725105 is a wasteful number, since it uses less digits than its factorization.
68725105 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 32327.
The product of its (nonzero) digits is 16800, while the sum is 34.
The square root of 68725105 is about 8290.0606149774. The cubic root of 68725105 is about 409.6111820506.
The spelling of 68725105 in words is "sixty-eight million, seven hundred twenty-five thousand, one hundred five".
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