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68709708 = 223623563
BaseRepresentation
bin1000001100001…
…10110101001100
311210021211000000
410012012311030
5120042202313
610452404300
71463010564
oct406066514
9153254000
1068709708
113586a691
121b016690
1311309442
1491a7da4
156073673
hex4186d4c

68709708 has 42 divisors (see below), whose sum is σ = 180288164. Its totient is φ = 22902264.

The previous prime is 68709701. The next prime is 68709731. The reversal of 68709708 is 80790786.

It is not an unprimeable number, because it can be changed into a prime (68709701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8866 + ... + 14697.

Almost surely, 268709708 is an apocalyptic number.

It is an amenable number.

68709708 is an abundant number, since it is smaller than the sum of its proper divisors (111578456).

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

68709708 is a wasteful number, since it uses less digits than its factorization.

68709708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23585 (or 23568 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 68709708 is about 8289.1319207743. The cubic root of 68709708 is about 409.5805903456.

The spelling of 68709708 in words is "sixty-eight million, seven hundred nine thousand, seven hundred eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 81 108 162 243 324 486 729 972 1458 2916 23563 47126 70689 94252 141378 212067 282756 424134 636201 848268 1272402 1908603 2544804 3817206 5725809 7634412 11451618 17177427 22903236 34354854 68709708