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68385606 = 2316696829
BaseRepresentation
bin1000001001101…
…11101101000110
311202200100102020
410010313231012
5120001314411
610441424010
71460160642
oct404675506
9152610366
1068385606
1135669133
121aa9b006
1311224a73
149121c22
15600c606
hex4137b46

68385606 has 16 divisors (see below), whose sum is σ = 136873200. Its totient is φ = 22778208.

The previous prime is 68385599. The next prime is 68385607. The reversal of 68385606 is 60658386.

It is a super-2 number, since 2×683856062 = 9353182215974472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68385607) 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 7 ways as a sum of consecutive naturals, for example, 6600 + ... + 13428.

It is an arithmetic number, because the mean of its divisors is an integer number (8554575).

Almost surely, 268385606 is an apocalyptic number.

68385606 is an abundant number, since it is smaller than the sum of its proper divisors (68487594).

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

68385606 is a wasteful number, since it uses less digits than its factorization.

68385606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 68385606 is about 8269.5589967059. The cubic root of 68385606 is about 408.9355812644.

The spelling of 68385606 in words is "sixty-eight million, three hundred eighty-five thousand, six hundred six".

Divisors: 1 2 3 6 1669 3338 5007 6829 10014 13658 20487 40974 11397601 22795202 34192803 68385606