Base | Representation |
---|---|
bin | 11010101000001111111101 |
3 | 111010122120221 |
4 | 122220033331 |
5 | 3241334410 |
6 | 405341341 |
7 | 113222422 |
oct | 32501775 |
9 | 14118527 |
10 | 6980605 |
11 | 3a386a5 |
12 | 2407851 |
13 | 15a5448 |
14 | cd9d49 |
15 | 92d4da |
hex | 6a83fd |
6980605 has 16 divisors (see below), whose sum is σ = 8714160. Its totient is φ = 5363712.
The previous prime is 6980593. The next prime is 6980609. The reversal of 6980605 is 5060896.
It can be written as a sum of positive squares in 8 ways, for example, as 441 + 6980164 = 21^2 + 2642^2 .
It is not a de Polignac number, because 6980605 - 221 = 4883453 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (6980609) 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, 17751 + ... + 18139.
It is an arithmetic number, because the mean of its divisors is an integer number (544635).
Almost surely, 26980605 is an apocalyptic number.
It is an amenable number.
6980605 is a deficient number, since it is larger than the sum of its proper divisors (1733555).
6980605 is a wasteful number, since it uses less digits than its factorization.
6980605 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 528.
The product of its (nonzero) digits is 12960, while the sum is 34.
The square root of 6980605 is about 2642.0834581822. The cubic root of 6980605 is about 191.1162819971.
The spelling of 6980605 in words is "six million, nine hundred eighty thousand, six hundred five".
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