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65362081 = 187334897
BaseRepresentation
bin1111100101010…
…1100010100001
311112222201220211
43321111202201
5113213041311
610252534121
71422366001
oct371254241
9145881824
1065362081
1133993554
1219a81341
13107067b5
148976001
155b11821
hex3e558a1

65362081 has 4 divisors (see below), whose sum is σ = 65398852. Its totient is φ = 65325312.

The previous prime is 65362079. The next prime is 65362097. The reversal of 65362081 is 18026356.

65362081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2016400 + 63345681 = 1420^2 + 7959^2 .

It is a cyclic number.

It is not a de Polignac number, because 65362081 - 21 = 65362079 is a prime.

It is a super-2 number, since 2×653620812 = 8544403265301122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65362061) 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 3 ways as a sum of consecutive naturals, for example, 15576 + ... + 19321.

It is an arithmetic number, because the mean of its divisors is an integer number (16349713).

Almost surely, 265362081 is an apocalyptic number.

It is an amenable number.

65362081 is a deficient number, since it is larger than the sum of its proper divisors (36771).

65362081 is a wasteful number, since it uses less digits than its factorization.

65362081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36770.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 65362081 is about 8084.6818737660. The cubic root of 65362081 is about 402.8177725351.

The spelling of 65362081 in words is "sixty-five million, three hundred sixty-two thousand, eighty-one".

Divisors: 1 1873 34897 65362081