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6810 = 235227
BaseRepresentation
bin1101010011010
3100100020
41222122
5204220
651310
725566
oct15232
910306
106810
115131
123b36
13313b
1426a6
152040
hex1a9a

6810 has 16 divisors (see below), whose sum is σ = 16416. Its totient is φ = 1808.

The previous prime is 6803. The next prime is 6823. The reversal of 6810 is 186.

6810 divided by its sum of digits (15) gives a palindrome (454).

Adding to 6810 its reverse (186), we get a palindrome (6996).

It can be divided in two parts, 68 and 10, that added together give a triangular number (78 = T12).

It is a super-2 number, since 2×68102 = 92752200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 6810.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84 + ... + 143.

It is an arithmetic number, because the mean of its divisors is an integer number (1026).

26810 is an apocalyptic number.

6810 is an abundant number, since it is smaller than the sum of its proper divisors (9606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8208).

6810 is a wasteful number, since it uses less digits than its factorization.

6810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 6810 is about 82.5227241431. The cubic root of 6810 is about 18.9546471385.

The spelling of 6810 in words is "six thousand, eight hundred ten".

Divisors: 1 2 3 5 6 10 15 30 227 454 681 1135 1362 2270 3405 6810