6605959 has 4 divisors (see below), whose sum is σ = 6624720. Its totient is φ = 6587200.

The previous prime is 6605953. The next prime is 6605969. The reversal of 6605959 is 9595066.

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 6605959 - 2⁷ = 6605831 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6605953) 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 3 ways as a sum of consecutive naturals, for example, 8842 + ... + 9559.

It is an arithmetic number, because the mean of its divisors is an integer number (1656180).

Almost surely, 2^6605959 is an apocalyptic number.

6605959 is a deficient number, since it is larger than the sum of its proper divisors (18761).

6605959 is a wasteful number, since it uses less digits than its factorization.

6605959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18760.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 6605959 is about 2570.2060228705. The cubic root of 6605959 is about 187.6341818775.

The spelling of 6605959 in words is "six million, six hundred five thousand, nine hundred fifty-nine".