669127 has 2 divisors, whose sum is σ = 669128. Its totient is φ = 669126.

The previous prime is 669121. The next prime is 669133. The reversal of 669127 is 721966.

It is a balanced prime because it is at equal distance from previous prime (669121) and next prime (669133).

It is a cyclic number.

It is not a de Polignac number, because 669127 - 2⁷ = 668999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (669121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334563 + 334564.

It is an arithmetic number, because the mean of its divisors is an integer number (334564).

2⁶⁶⁹¹²⁷ is an apocalyptic number.

669127 is a deficient number, since it is larger than the sum of its proper divisors (1).

669127 is an equidigital number, since it uses as much as digits as its factorization.

669127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 669127 is about 818.0018337388. The cubic root of 669127 is about 87.4653795010.

The spelling of 669127 in words is "six hundred sixty-nine thousand, one hundred twenty-seven".