6556500655 has 8 divisors (see below), whose sum is σ = 7887621312. Its totient is φ = 5231986848.

The previous prime is 6556500631. The next prime is 6556500659. The reversal of 6556500655 is 5560056556.

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

It is a cyclic number.

It is not a de Polignac number, because 6556500655 - 2¹⁹ = 6555976367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556500659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1649527 + ... + 1653496.

It is an arithmetic number, because the mean of its divisors is an integer number (985952664).

Almost surely, 2^6556500655 is an apocalyptic number.

6556500655 is a deficient number, since it is larger than the sum of its proper divisors (1331120657).

6556500655 is a wasteful number, since it uses less digits than its factorization.

6556500655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303425.

The product of its (nonzero) digits is 675000, while the sum is 43.

The square root of 6556500655 is about 80972.2215021917. The cubic root of 6556500655 is about 1871.6474043981.

The spelling of 6556500655 in words is "six billion, five hundred fifty-six million, five hundred thousand, six hundred fifty-five".