Base | Representation |
---|---|
bin | 1000000110111… |
… | …00100010100101 |
3 | 11201222101012021 |
4 | 10003130202211 |
5 | 114402342242 |
6 | 10425423141 |
7 | 1454044201 |
oct | 403344245 |
9 | 151871167 |
10 | 68012197 |
11 | 35433630 |
12 | 1a93aab1 |
13 | 11123b06 |
14 | 9065b01 |
15 | 5e86b67 |
hex | 40dc8a5 |
68012197 has 16 divisors (see below), whose sum is σ = 77381568. Its totient is φ = 59230080.
The previous prime is 68012177. The next prime is 68012207. The reversal of 68012197 is 79121086.
It is a happy number.
It is a cyclic number.
It is not a de Polignac number, because 68012197 - 27 = 68012069 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68012117) 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, 23713 + ... + 26425.
It is an arithmetic number, because the mean of its divisors is an integer number (4836348).
Almost surely, 268012197 is an apocalyptic number.
It is an amenable number.
68012197 is a deficient number, since it is larger than the sum of its proper divisors (9369371).
68012197 is a wasteful number, since it uses less digits than its factorization.
68012197 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2820.
The product of its (nonzero) digits is 6048, while the sum is 34.
The square root of 68012197 is about 8246.9507698300. The cubic root of 68012197 is about 408.1899126285.
Subtracting 68012197 from its reverse (79121086), we obtain a square (11108889 = 33332).
It can be divided in two parts, 6801 and 2197, that added together give a palindrome (8998).
The spelling of 68012197 in words is "sixty-eight million, twelve thousand, one hundred ninety-seven".
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