6553689 has 16 divisors (see below), whose sum is σ = 9600000. Its totient is φ = 3958416.

The previous prime is 6553663. The next prime is 6553733. The reversal of 6553689 is 9863556.

It is a de Polignac number, because none of the positive numbers 2^k-6553689 is a prime.

It is a super-3 number, since 3×6553689³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6553689.

It is not an unprimeable number, because it can be changed into a prime (6553489) 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 15 ways as a sum of consecutive naturals, for example, 1189 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (600000).

Almost surely, 2^6553689 is an apocalyptic number.

6553689 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6553689 is a deficient number, since it is larger than the sum of its proper divisors (3046311).

6553689 is a wasteful number, since it uses less digits than its factorization.

6553689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044.

The product of its digits is 194400, while the sum is 42.

The square root of 6553689 is about 2560.0173827535. The cubic root of 6553689 is about 187.1379823693.

The spelling of 6553689 in words is "six million, five hundred fifty-three thousand, six hundred eighty-nine".