Base | Representation |
---|---|
bin | 1000001011100… |
… | …01100101011101 |
3 | 11210010101121221 |
4 | 10011301211131 |
5 | 120031411220 |
6 | 10450453341 |
7 | 1462166065 |
oct | 405614535 |
9 | 153111557 |
10 | 68622685 |
11 | 3581026a |
12 | 1ab94251 |
13 | 112a8951 |
14 | 91843a5 |
15 | 60579aa |
hex | 417195d |
68622685 has 16 divisors (see below), whose sum is σ = 88704000. Its totient is φ = 50814720.
The previous prime is 68622677. The next prime is 68622691. The reversal of 68622685 is 58622686.
It is not a de Polignac number, because 68622685 - 23 = 68622677 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6060 + ... + 13189.
It is an arithmetic number, because the mean of its divisors is an integer number (5544000).
Almost surely, 268622685 is an apocalyptic number.
It is an amenable number.
68622685 is a deficient number, since it is larger than the sum of its proper divisors (20081315).
68622685 is a wasteful number, since it uses less digits than its factorization.
68622685 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 19308.
The product of its digits is 276480, while the sum is 43.
The square root of 68622685 is about 8283.8810348773. The cubic root of 68622685 is about 409.4076017390.
Subtracting from 68622685 its reverse (58622686), we obtain a palindrome (9999999).
The spelling of 68622685 in words is "sixty-eight million, six hundred twenty-two thousand, six hundred eighty-five".
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