Base | Representation |
---|---|
bin | 100000111101… |
… | …100011000101 |
3 | 121020222211021 |
4 | 200331203011 |
5 | 4203000314 |
6 | 505111141 |
7 | 133305400 |
oct | 40754305 |
9 | 17228737 |
10 | 8640709 |
11 | 4971990 |
12 | 2a884b1 |
13 | 1a36c5c |
14 | 120cd37 |
15 | b5a324 |
hex | 83d8c5 |
8640709 has 48 divisors (see below), whose sum is σ = 12410496. Its totient is φ = 5913600.
The previous prime is 8640707. The next prime is 8640713. The reversal of 8640709 is 9070468.
It is not a de Polignac number, because 8640709 - 21 = 8640707 is a prime.
It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.
8640709 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8640701) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 210729 + ... + 210769.
It is an arithmetic number, because the mean of its divisors is an integer number (258552).
Almost surely, 28640709 is an apocalyptic number.
It is an amenable number.
8640709 is a deficient number, since it is larger than the sum of its proper divisors (3769787).
8640709 is a wasteful number, since it uses less digits than its factorization.
8640709 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 106 (or 99 counting only the distinct ones).
The product of its (nonzero) digits is 12096, while the sum is 34.
The square root of 8640709 is about 2939.5082922149. The cubic root of 8640709 is about 205.2027262854.
The spelling of 8640709 in words is "eight million, six hundred forty thousand, seven hundred nine".
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