66127 has 4 divisors (see below), whose sum is σ = 66960. Its totient is φ = 65296.

The previous prime is 66109. The next prime is 66137. The reversal of 66127 is 72166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72166 = 2 ⋅36083.

It is a cyclic number.

It is not a de Polignac number, because 66127 - 2¹⁵ = 33359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66098 and 66107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283 + ... + 460.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2⁶⁶¹²⁷ is an apocalyptic number.

66127 is a deficient number, since it is larger than the sum of its proper divisors (833).

66127 is an equidigital number, since it uses as much as digits as its factorization.

66127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its digits is 504, while the sum is 22.

The square root of 66127 is about 257.1517061969. The cubic root of 66127 is about 40.4383046828.

The spelling of 66127 in words is "sixty-six thousand, one hundred twenty-seven".