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6808725 = 3352711131
BaseRepresentation
bin11001111110010010010101
3110210220211000
4121332102111
53220334400
6401533513
7111605340
oct31762225
913726730
106808725
113930550
122344299
131545141
14c93457
158e7600
hex67e495

6808725 has 96 divisors (see below), whose sum is σ = 15713280. Its totient is φ = 2808000.

The previous prime is 6808717. The next prime is 6808733. The reversal of 6808725 is 5278086.

It is an interprime number because it is at equal distance from previous prime (6808717) and next prime (6808733).

It is not a de Polignac number, because 6808725 - 23 = 6808717 is a prime.

It is a super-2 number, since 2×68087252 = 92717472251250, which contains 22 as substring.

6808725 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6808725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51910 + ... + 52040.

It is an arithmetic number, because the mean of its divisors is an integer number (163680).

Almost surely, 26808725 is an apocalyptic number.

It is an amenable number.

6808725 is an abundant number, since it is smaller than the sum of its proper divisors (8904555).

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

6808725 is a wasteful number, since it uses less digits than its factorization.

6808725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 6808725 is about 2609.3533681738. The cubic root of 6808725 is about 189.5346413883.

The spelling of 6808725 in words is "six million, eight hundred eight thousand, seven hundred twenty-five".

Divisors: 1 3 5 7 9 11 15 21 25 27 33 35 45 55 63 75 77 99 105 131 135 165 175 189 225 231 275 297 315 385 393 495 525 655 675 693 825 917 945 1155 1179 1441 1485 1575 1925 1965 2079 2475 2751 3275 3465 3537 4323 4585 4725 5775 5895 7205 7425 8253 9825 10087 10395 12969 13755 17325 17685 21615 22925 24759 29475 30261 36025 38907 41265 50435 51975 64845 68775 88425 90783 108075 123795 151305 194535 206325 252175 272349 324225 453915 618975 756525 972675 1361745 2269575 6808725