667727 has 2 divisors, whose sum is σ = 667728. Its totient is φ = 667726.

The previous prime is 667699. The next prime is 667741. The reversal of 667727 is 727766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667727 - 2¹² = 663631 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 667727.

It is not a weakly prime, because it can be changed into another prime (667127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333863 + 333864.

It is an arithmetic number, because the mean of its divisors is an integer number (333864).

2⁶⁶⁷⁷²⁷ is an apocalyptic number.

667727 is a deficient number, since it is larger than the sum of its proper divisors (1).

667727 is an equidigital number, since it uses as much as digits as its factorization.

667727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24696, while the sum is 35.

The square root of 667727 is about 817.1456418534. The cubic root of 667727 is about 87.4043362653.

The spelling of 667727 in words is "six hundred sixty-seven thousand, seven hundred twenty-seven".