Base | Representation |
---|---|
bin | 1000000111011… |
… | …10101010000001 |
3 | 11202010010222120 |
4 | 10003232222001 |
5 | 114412231101 |
6 | 10431154453 |
7 | 1454503425 |
oct | 403565201 |
9 | 152103876 |
10 | 68086401 |
11 | 35484359 |
12 | 1a975a29 |
13 | 1114b816 |
14 | 9084b85 |
15 | 5e9db36 |
hex | 40eea81 |
68086401 has 16 divisors (see below), whose sum is σ = 93819264. Its totient is φ = 43887744.
The previous prime is 68086393. The next prime is 68086429. The reversal of 68086401 is 10468086.
It is not a de Polignac number, because 68086401 - 23 = 68086393 is a prime.
It is a super-2 number, since 2×680864012 = 9271516002265602, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (68086441) 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, 16701 + ... + 20373.
It is an arithmetic number, because the mean of its divisors is an integer number (5863704).
Almost surely, 268086401 is an apocalyptic number.
It is an amenable number.
68086401 is a deficient number, since it is larger than the sum of its proper divisors (25732863).
68086401 is a wasteful number, since it uses less digits than its factorization.
68086401 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3880.
The product of its (nonzero) digits is 9216, while the sum is 33.
The square root of 68086401 is about 8251.4484183081. The cubic root of 68086401 is about 408.3383091254.
The spelling of 68086401 in words is "sixty-eight million, eighty-six thousand, four hundred one".
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