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67804 = 22112367
BaseRepresentation
bin10000100011011100
310110000021
4100203130
54132204
61241524
7401452
oct204334
9113007
1067804
1146a40
12332a4
1324b29
141a9d2
1515154
hex108dc

67804 has 24 divisors (see below), whose sum is σ = 137088. Its totient is φ = 29040.

The previous prime is 67801. The next prime is 67807. The reversal of 67804 is 40876.

67804 = T65 + T66 + ... + T87.

It is an interprime number because it is at equal distance from previous prime (67801) and next prime (67807).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67801) by changing a digit.

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, 979 + ... + 1045.

It is an arithmetic number, because the mean of its divisors is an integer number (5712).

267804 is an apocalyptic number.

It is an amenable number.

67804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (68544).

67804 is a wasteful number, since it uses less digits than its factorization.

67804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 67804 is about 260.3920121663. The cubic root of 67804 is about 40.7772973787. Note that the first 3 decimals are identical.

The spelling of 67804 in words is "sixty-seven thousand, eight hundred four".

Divisors: 1 2 4 11 22 23 44 46 67 92 134 253 268 506 737 1012 1474 1541 2948 3082 6164 16951 33902 67804