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80061065 = 5731113653
BaseRepresentation
bin1001100010110…
…10001010001001
312120122112010122
410301122022021
5130443423230
611535553025
71661336120
oct461321211
9176575118
1080061065
1141213077
122298b775
1313782116
14a8c0ab7
157066be5
hex4c5a289

80061065 has 32 divisors (see below), whose sum is σ = 114518016. Its totient is φ = 52577280.

The previous prime is 80061061. The next prime is 80061073. The reversal of 80061065 is 56016008.

It is not a de Polignac number, because 80061065 - 22 = 80061061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80061061) 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 31 ways as a sum of consecutive naturals, for example, 122279 + ... + 122931.

It is an arithmetic number, because the mean of its divisors is an integer number (3578688).

Almost surely, 280061065 is an apocalyptic number.

It is an amenable number.

80061065 is a deficient number, since it is larger than the sum of its proper divisors (34456951).

80061065 is a wasteful number, since it uses less digits than its factorization.

80061065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 80061065 is about 8947.6848961058. The cubic root of 80061065 is about 430.9965439185.

The spelling of 80061065 in words is "eighty million, sixty-one thousand, sixty-five".

Divisors: 1 5 7 31 35 113 155 217 565 653 791 1085 3265 3503 3955 4571 17515 20243 22855 24521 73789 101215 122605 141701 368945 516523 708505 2287459 2582615 11437295 16012213 80061065