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66053741 = 135395869
BaseRepresentation
bin1111101111111…
…0011001101101
311121021212200212
43323332121231
5113402204431
610315432205
71431306335
oct373763155
9147255625
1066053741
1134316176
121a155665
13108b9570
148ab60c5
155beb72b
hex3efe66d

66053741 has 8 divisors (see below), whose sum is σ = 72477720. Its totient is φ = 59821632.

The previous prime is 66053731. The next prime is 66053783. The reversal of 66053741 is 14735066.

It can be written as a sum of positive squares in 4 ways, for example, as 1331716 + 64722025 = 1154^2 + 8045^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66053741 - 210 = 66052717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66053698 and 66053707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66053731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47246 + ... + 48623.

It is an arithmetic number, because the mean of its divisors is an integer number (9059715).

Almost surely, 266053741 is an apocalyptic number.

It is an amenable number.

66053741 is a deficient number, since it is larger than the sum of its proper divisors (6423979).

66053741 is a wasteful number, since it uses less digits than its factorization.

66053741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95935.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66053741 is about 8127.3452615230. The cubic root of 66053741 is about 404.2336593146.

The spelling of 66053741 in words is "sixty-six million, fifty-three thousand, seven hundred forty-one".

Divisors: 1 13 53 689 95869 1246297 5081057 66053741