6556289 has 8 divisors (see below), whose sum is σ = 6821760. Its totient is φ = 6295536.

The previous prime is 6556267. The next prime is 6556301. The reversal of 6556289 is 9826556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6556289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6556489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802 + ... + 4044.

It is an arithmetic number, because the mean of its divisors is an integer number (852720).

Almost surely, 2^6556289 is an apocalyptic number.

It is an amenable number.

6556289 is a deficient number, since it is larger than the sum of its proper divisors (265471).

6556289 is a wasteful number, since it uses less digits than its factorization.

6556289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its digits is 129600, while the sum is 41.

The square root of 6556289 is about 2560.5251414505. The cubic root of 6556289 is about 187.1627264193.

The spelling of 6556289 in words is "six million, five hundred fifty-six thousand, two hundred eighty-nine".