6662771 has 2 divisors, whose sum is σ = 6662772. Its totient is φ = 6662770.

The previous prime is 6662753. The next prime is 6662809. The reversal of 6662771 is 1772666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6662771 - 2⁶ = 6662707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6662741) 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, 3331385 + 3331386.

It is an arithmetic number, because the mean of its divisors is an integer number (3331386).

Almost surely, 2^6662771 is an apocalyptic number.

6662771 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662771 is an equidigital number, since it uses as much as digits as its factorization.

6662771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 35.

The square root of 6662771 is about 2581.2343946260. The cubic root of 6662771 is about 188.1705390063.

The spelling of 6662771 in words is "six million, six hundred sixty-two thousand, seven hundred seventy-one".