Base | Representation |
---|---|
bin | 11010101010010100110001 |
3 | 111011002020202 |
4 | 122222110301 |
5 | 3242122410 |
6 | 405444545 |
7 | 113256254 |
oct | 32522461 |
9 | 14132222 |
10 | 6989105 |
11 | 3a44022 |
12 | 2410755 |
13 | 15a9286 |
14 | cdd09b |
15 | 930ca5 |
hex | 6aa531 |
6989105 has 16 divisors (see below), whose sum is σ = 8799744. Its totient is φ = 5322240.
The previous prime is 6989071. The next prime is 6989107. The reversal of 6989105 is 5019896.
It is not a de Polignac number, because 6989105 - 212 = 6985009 is a prime.
It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (6989107) 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 15 ways as a sum of consecutive naturals, for example, 10049 + ... + 10721.
It is an arithmetic number, because the mean of its divisors is an integer number (549984).
Almost surely, 26989105 is an apocalyptic number.
It is an amenable number.
6989105 is a deficient number, since it is larger than the sum of its proper divisors (1810639).
6989105 is a wasteful number, since it uses less digits than its factorization.
6989105 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 776.
The product of its (nonzero) digits is 19440, while the sum is 38.
The square root of 6989105 is about 2643.6915478172. The cubic root of 6989105 is about 191.1938220520.
The spelling of 6989105 in words is "six million, nine hundred eighty-nine thousand, one hundred five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.066 sec. • engine limits •