6556917 has 16 divisors (see below), whose sum is σ = 9374400. Its totient is φ = 4061952.

The previous prime is 6556861. The next prime is 6556937. The reversal of 6556917 is 7196556.

It is not a de Polignac number, because 6556917 - 2¹¹ = 6554869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556937) 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, 3459 + ... + 5007.

It is an arithmetic number, because the mean of its divisors is an integer number (585900).

Almost surely, 2^6556917 is an apocalyptic number.

It is an amenable number.

6556917 is a deficient number, since it is larger than the sum of its proper divisors (2817483).

6556917 is a wasteful number, since it uses less digits than its factorization.

6556917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652.

The product of its digits is 56700, while the sum is 39.

The square root of 6556917 is about 2560.6477696083. The cubic root of 6556917 is about 187.1687020782.

The spelling of 6556917 in words is "six million, five hundred fifty-six thousand, nine hundred seventeen".