4066559 has 12 divisors (see below), whose sum is σ = 4860504. Its totient is φ = 3389904.

The previous prime is 4066537. The next prime is 4066567. The reversal of 4066559 is 9556604.

It is a happy number.

It is not a de Polignac number, because 4066559 - 2²⁰ = 3017983 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 692 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (405042).

Almost surely, 2^4066559 is an apocalyptic number.

4066559 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4066559 is a deficient number, since it is larger than the sum of its proper divisors (793945).

4066559 is a wasteful number, since it uses less digits than its factorization.

4066559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294 (or 2287 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 4066559 is about 2016.5710996640. The cubic root of 4066559 is about 159.6157314954.

The spelling of 4066559 in words is "four million, sixty-six thousand, five hundred fifty-nine".