4066647 has 16 divisors (see below), whose sum is σ = 5883360. Its totient is φ = 2498496.

The previous prime is 4066619. The next prime is 4066661. The reversal of 4066647 is 7466604.

It is not a de Polignac number, because 4066647 - 2¹² = 4062551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066747) 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 in 15 ways as a sum of consecutive naturals, for example, 6283 + ... + 6899.

It is an arithmetic number, because the mean of its divisors is an integer number (367710).

Almost surely, 2^4066647 is an apocalyptic number.

4066647 is a deficient number, since it is larger than the sum of its proper divisors (1816713).

4066647 is an equidigital number, since it uses as much as digits as its factorization.

4066647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 4066647 is about 2016.5929187617. The cubic root of 4066647 is about 159.6168828442.

The spelling of 4066647 in words is "four million, sixty-six thousand, six hundred forty-seven".