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66073 = 79439
BaseRepresentation
bin10000001000011001
310100122011
4100020121
54103243
61225521
7363430
oct201031
9110564
1066073
1145707
12322a1
13240c7
141a117
151489d
hex10219

66073 has 4 divisors (see below), whose sum is σ = 75520. Its totient is φ = 56628.

The previous prime is 66071. The next prime is 66083. The reversal of 66073 is 37066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66073 - 21 = 66071 is a prime.

It is a Duffinian number.

66073 is a lucky number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (66071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4713 + ... + 4726.

It is an arithmetic number, because the mean of its divisors is an integer number (18880).

266073 is an apocalyptic number.

It is an amenable number.

66073 is a deficient number, since it is larger than the sum of its proper divisors (9447).

66073 is an equidigital number, since it uses as much as digits as its factorization.

66073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 66073 is about 257.0466883661. The cubic root of 66073 is about 40.4272942376.

The spelling of 66073 in words is "sixty-six thousand, seventy-three".

Divisors: 1 7 9439 66073