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66282741 = 3272150301
BaseRepresentation
bin1111110011011…
…0010011110101
311121201111211100
43330312103311
5113432021431
610324400313
71433252100
oct374662365
9147644740
1066282741
1134462228
121a246099
1310969875
148b35737
155c444e6
hex3f364f5

66282741 has 18 divisors (see below), whose sum is σ = 111373782. Its totient is φ = 37875600.

The previous prime is 66282739. The next prime is 66282751. The reversal of 66282741 is 14728266.

66282741 is a `hidden beast` number, since 6 + 628 + 27 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43758225 + 22524516 = 6615^2 + 4746^2 .

It is not a de Polignac number, because 66282741 - 21 = 66282739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66282696 and 66282705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66282751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 74710 + ... + 75591.

Almost surely, 266282741 is an apocalyptic number.

It is an amenable number.

66282741 is a deficient number, since it is larger than the sum of its proper divisors (45091041).

66282741 is a wasteful number, since it uses less digits than its factorization.

66282741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150321 (or 150311 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 66282741 is about 8141.4213132597. The cubic root of 66282741 is about 404.7002629040.

The spelling of 66282741 in words is "sixty-six million, two hundred eighty-two thousand, seven hundred forty-one".

Divisors: 1 3 7 9 21 49 63 147 441 150301 450903 1052107 1352709 3156321 7364749 9468963 22094247 66282741