6606559 has 4 divisors (see below), whose sum is σ = 6680880. Its totient is φ = 6532240.

The previous prime is 6606541. The next prime is 6606581. The reversal of 6606559 is 9556066.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6606559 - 2⁵ = 6606527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37027 + ... + 37204.

It is an arithmetic number, because the mean of its divisors is an integer number (1670220).

Almost surely, 2^6606559 is an apocalyptic number.

6606559 is a deficient number, since it is larger than the sum of its proper divisors (74321).

6606559 is an equidigital number, since it uses as much as digits as its factorization.

6606559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74320.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 6606559 is about 2570.3227423808. The cubic root of 6606559 is about 187.6398624608.

The spelling of 6606559 in words is "six million, six hundred six thousand, five hundred fifty-nine".