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86068881 = 324125689
BaseRepresentation
bin1010010000101…
…00111010010001
312222221202022100
411020110322101
5134013201011
612312431013
72063400453
oct510247221
9188852270
1086068881
1144646908
12249a8469
1314aa6842
14b6062d3
157851d56
hex5214e91

86068881 has 18 divisors (see below), whose sum is σ = 127450310. Its totient is φ = 55969920.

The previous prime is 86068861. The next prime is 86068933. The reversal of 86068881 is 18886068.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1134225 + 84934656 = 1065^2 + 9216^2 .

It is not a de Polignac number, because 86068881 - 25 = 86068849 is a prime.

It is a super-2 number, since 2×860688812 = 14815704553184322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86068811) 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 17 ways as a sum of consecutive naturals, for example, 12285 + ... + 17973.

Almost surely, 286068881 is an apocalyptic number.

It is an amenable number.

86068881 is a deficient number, since it is larger than the sum of its proper divisors (41381429).

86068881 is a wasteful number, since it uses less digits than its factorization.

86068881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777 (or 5733 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 86068881 is about 9277.3315667815. The cubic root of 86068881 is about 441.5183101740.

The spelling of 86068881 in words is "eighty-six million, sixty-eight thousand, eight hundred eighty-one".

Divisors: 1 3 9 41 123 369 1681 5043 5689 15129 17067 51201 233249 699747 2099241 9563209 28689627 86068881