Base | Representation |
---|---|
bin | 11001000000110000001000 |
3 | 110100010002000 |
4 | 121000300020 |
5 | 3134303210 |
6 | 352311000 |
7 | 106505454 |
oct | 31006010 |
9 | 13303060 |
10 | 6556680 |
11 | 3779149 |
12 | 2242460 |
13 | 14874c0 |
14 | c29664 |
15 | 897ac0 |
hex | 640c08 |
6556680 has 128 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 1610496.
The previous prime is 6556673. The next prime is 6556699. The reversal of 6556680 is 866556.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13807 + ... + 14273.
It is an arithmetic number, because the mean of its divisors is an integer number (184275).
Almost surely, 26556680 is an apocalyptic number.
6556680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 6556680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11793600).
6556680 is an abundant number, since it is smaller than the sum of its proper divisors (17030520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6556680 is a wasteful number, since it uses less digits than its factorization.
With its predecessor (6556679) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (490).
6556680 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 500 (or 490 counting only the distinct ones).
The product of its (nonzero) digits is 43200, while the sum is 36.
The square root of 6556680 is about 2560.6014918374. The cubic root of 6556680 is about 187.1664469779.
The spelling of 6556680 in words is "six million, five hundred fifty-six thousand, six hundred eighty".
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