2666559 has 16 divisors (see below), whose sum is σ = 4159232. Its totient is φ = 1487808.

The previous prime is 2666539. The next prime is 2666561. The reversal of 2666559 is 9556662.

2666559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2666559 - 2⁸ = 2666303 is a prime.

It is a super-2 number, since 2×2666559² = 14221073800962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574 + ... + 2379.

It is an arithmetic number, because the mean of its divisors is an integer number (259952).

2^2666559 is an apocalyptic number.

2666559 is a deficient number, since it is larger than the sum of its proper divisors (1492673).

2666559 is a wasteful number, since it uses less digits than its factorization.

2666559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006.

The product of its digits is 97200, while the sum is 39.

The square root of 2666559 is about 1632.9601954732. The cubic root of 2666559 is about 138.6703885476.

The spelling of 2666559 in words is "two million, six hundred sixty-six thousand, five hundred fifty-nine".