Base | Representation |
---|---|
bin | 1000001001111… |
… | …01001101111001 |
3 | 11202201111101111 |
4 | 10010331031321 |
5 | 120003030220 |
6 | 10442120321 |
7 | 1460313526 |
oct | 404751571 |
9 | 152644344 |
10 | 68408185 |
11 | 3568409a |
12 | 1aab00a1 |
13 | 11232121 |
14 | 912a14d |
15 | 601415a |
hex | 413d379 |
68408185 has 8 divisors (see below), whose sum is σ = 83079360. Its totient is φ = 54066864.
The previous prime is 68408173. The next prime is 68408191. The reversal of 68408185 is 58180486.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 68408185 - 27 = 68408057 is a prime.
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, 82005 + ... + 82834.
It is an arithmetic number, because the mean of its divisors is an integer number (10384920).
Almost surely, 268408185 is an apocalyptic number.
It is an amenable number.
68408185 is a deficient number, since it is larger than the sum of its proper divisors (14671175).
68408185 is a wasteful number, since it uses less digits than its factorization.
68408185 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 164927.
The product of its (nonzero) digits is 61440, while the sum is 40.
The square root of 68408185 is about 8270.9240717105. The cubic root of 68408185 is about 408.9805826471.
The spelling of 68408185 in words is "sixty-eight million, four hundred eight thousand, one hundred eighty-five".
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