Base | Representation |
---|---|
bin | 1000001001101… |
… | …10011000000101 |
3 | 11202200001221201 |
4 | 10010312120011 |
5 | 120001131130 |
6 | 10441342501 |
7 | 1460136040 |
oct | 404663005 |
9 | 152601851 |
10 | 68380165 |
11 | 35665037 |
12 | 1aa97a31 |
13 | 11222449 |
14 | 911dc57 |
15 | 600abca |
hex | 4136605 |
68380165 has 16 divisors (see below), whose sum is σ = 93950208. Its totient is φ = 46803456.
The previous prime is 68380163. The next prime is 68380177. The reversal of 68380165 is 56108386.
It is not a de Polignac number, because 68380165 - 21 = 68380163 is a prime.
It is a Duffinian number.
It is a plaindrome in base 13.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68380163) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22104 + ... + 25006.
It is an arithmetic number, because the mean of its divisors is an integer number (5871888).
Almost surely, 268380165 is an apocalyptic number.
It is an amenable number.
68380165 is a deficient number, since it is larger than the sum of its proper divisors (25570043).
68380165 is a wasteful number, since it uses less digits than its factorization.
68380165 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3588.
The product of its (nonzero) digits is 34560, while the sum is 37.
The square root of 68380165 is about 8269.2300125223. The cubic root of 68380165 is about 408.9247355244.
The spelling of 68380165 in words is "sixty-eight million, three hundred eighty thousand, one hundred sixty-five".
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