Base | Representation |
---|---|
bin | 1000001000001… |
… | …01101001010101 |
3 | 11202021221011010 |
4 | 10010011221111 |
5 | 114423234230 |
6 | 10433202433 |
7 | 1455345105 |
oct | 404055125 |
9 | 152257133 |
10 | 68180565 |
11 | 35539082 |
12 | 1aa00419 |
13 | 1118263b |
14 | 90ab205 |
15 | 5ebb9b0 |
hex | 4105a55 |
68180565 has 8 divisors (see below), whose sum is σ = 109088928. Its totient is φ = 36362960.
The previous prime is 68180551. The next prime is 68180573. The reversal of 68180565 is 56508186.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 68180565 - 24 = 68180549 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2272671 + ... + 2272700.
It is an arithmetic number, because the mean of its divisors is an integer number (13636116).
Almost surely, 268180565 is an apocalyptic number.
It is an amenable number.
68180565 is a deficient number, since it is larger than the sum of its proper divisors (40908363).
68180565 is a wasteful number, since it uses less digits than its factorization.
68180565 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4545379.
The product of its (nonzero) digits is 57600, while the sum is 39.
The square root of 68180565 is about 8257.1523541715. The cubic root of 68180565 is about 408.5264673855.
The spelling of 68180565 in words is "sixty-eight million, one hundred eighty thousand, five hundred sixty-five".
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