6655863 has 4 divisors (see below), whose sum is σ = 8874488. Its totient is φ = 4437240.

The previous prime is 6655837. The next prime is 6655879. The reversal of 6655863 is 3685566.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6655863 - 2⁹ = 6655351 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109308 + ... + 1109313.

It is an arithmetic number, because the mean of its divisors is an integer number (2218622).

Almost surely, 2^6655863 is an apocalyptic number.

6655863 is a deficient number, since it is larger than the sum of its proper divisors (2218625).

6655863 is a wasteful number, since it uses less digits than its factorization.

6655863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218624.

The product of its digits is 129600, while the sum is 39.

The square root of 6655863 is about 2579.8959281335. The cubic root of 6655863 is about 188.1054844124.

The spelling of 6655863 in words is "six million, six hundred fifty-five thousand, eight hundred sixty-three".