6661327 has 2 divisors, whose sum is σ = 6661328. Its totient is φ = 6661326.

The previous prime is 6661313. The next prime is 6661337. The reversal of 6661327 is 7231666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6661327 is a prime.

6661327 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6661307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330663 + 3330664.

It is an arithmetic number, because the mean of its divisors is an integer number (3330664).

Almost surely, 2^6661327 is an apocalyptic number.

6661327 is a deficient number, since it is larger than the sum of its proper divisors (1).

6661327 is an equidigital number, since it uses as much as digits as its factorization.

6661327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 6661327 is about 2580.9546683350. The cubic root of 6661327 is about 188.1569441676.

The spelling of 6661327 in words is "six million, six hundred sixty-one thousand, three hundred twenty-seven".