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BaseRepresentation
bin10000000111111111
310100121012
4100013333
54103142
61225435
7363362
oct200777
9110535
1066047
1145693
123227b
13240a7
141a0d9
1514882
hex101ff

66047 has 2 divisors, whose sum is σ = 66048. Its totient is φ = 66046.

The previous prime is 66041. The next prime is 66067. The reversal of 66047 is 74066.

It can be divided in two parts, 660 and 47, that added together give a palindrome (707).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66047 - 26 = 65983 is a prime.

It is a Chen prime.

It is a Kynea number, being equal to (28 + 1)2 - 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33023 + 33024.

It is an arithmetic number, because the mean of its divisors is an integer number (33024).

266047 is an apocalyptic number.

66047 is a deficient number, since it is larger than the sum of its proper divisors (1).

66047 is an equidigital number, since it uses as much as digits as its factorization.

66047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 66047 is about 256.9961089200. The cubic root of 66047 is about 40.4219907725.

The spelling of 66047 in words is "sixty-six thousand, forty-seven".