Base | Representation |
---|---|
bin | 1000001101111… |
… | …10100001001101 |
3 | 11210201101220001 |
4 | 10012332201031 |
5 | 120122002210 |
6 | 10501324301 |
7 | 1464650566 |
oct | 406764115 |
9 | 153641801 |
10 | 68937805 |
11 | 35a05aa2 |
12 | 1b106691 |
13 | 11389201 |
14 | 922716d |
15 | 60bb03a |
hex | 41be84d |
68937805 has 16 divisors (see below), whose sum is σ = 88833024. Its totient is φ = 51170560.
The previous prime is 68937787. The next prime is 68937811. The reversal of 68937805 is 50873986.
It is not a de Polignac number, because 68937805 - 25 = 68937773 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, 324 + ... + 11746.
It is an arithmetic number, because the mean of its divisors is an integer number (5552064).
Almost surely, 268937805 is an apocalyptic number.
It is an amenable number.
68937805 is a deficient number, since it is larger than the sum of its proper divisors (19895219).
68937805 is a wasteful number, since it uses less digits than its factorization.
68937805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11516.
The product of its (nonzero) digits is 362880, while the sum is 46.
The square root of 68937805 is about 8302.8793198504. The cubic root of 68937805 is about 410.0333207106.
The spelling of 68937805 in words is "sixty-eight million, nine hundred thirty-seven thousand, eight hundred five".
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