6555646 has 8 divisors (see below), whose sum is σ = 10351080. Its totient is φ = 3105288.

The previous prime is 6555611. The next prime is 6555649. The reversal of 6555646 is 6465556.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86221 + ... + 86296.

It is an arithmetic number, because the mean of its divisors is an integer number (1293885).

Almost surely, 2^6555646 is an apocalyptic number.

6555646 is a deficient number, since it is larger than the sum of its proper divisors (3795434).

6555646 is a wasteful number, since it uses less digits than its factorization.

6555646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172538.

The product of its digits is 108000, while the sum is 37.

The square root of 6555646 is about 2560.3995781909. The cubic root of 6555646 is about 187.1566076344.

The spelling of 6555646 in words is "six million, five hundred fifty-five thousand, six hundred forty-six".