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68635500 = 2235345757
BaseRepresentation
bin1000001011101…
…00101101101100
311210011001012120
410011310231230
5120032314000
610451032540
71462251333
oct405645554
9153131176
1068635500
113581995a
121ab9b750
13112b172b
149188d1a
15605b6a0
hex4174b6c

68635500 has 48 divisors (see below), whose sum is σ = 199870944. Its totient is φ = 18302400.

The previous prime is 68635451. The next prime is 68635507. The reversal of 68635500 is 553686.

It is not an unprimeable number, because it can be changed into a prime (68635507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21379 + ... + 24378.

It is an arithmetic number, because the mean of its divisors is an integer number (4163978).

Almost surely, 268635500 is an apocalyptic number.

68635500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68635500 is an abundant number, since it is smaller than the sum of its proper divisors (131235444).

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

68635500 is a wasteful number, since it uses less digits than its factorization.

68635500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45779 (or 45767 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 68635500 is about 8284.6544888728. The cubic root of 68635500 is about 409.4330852064.

The spelling of 68635500 in words is "sixty-eight million, six hundred thirty-five thousand, five hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 125 150 250 300 375 500 750 1500 45757 91514 137271 183028 228785 274542 457570 549084 686355 915140 1143925 1372710 2287850 2745420 3431775 4575700 5719625 6863550 11439250 13727100 17158875 22878500 34317750 68635500