6655659 has 8 divisors (see below), whose sum is σ = 8888640. Its totient is φ = 4429896.

The previous prime is 6655651. The next prime is 6655661. The reversal of 6655659 is 9565566.

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

It is not a de Polignac number, because 6655659 - 2³ = 6655651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6655659.

It is not an unprimeable number, because it can be changed into a prime (6655651) 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 7 ways as a sum of consecutive naturals, for example, 952 + ... + 3770.

It is an arithmetic number, because the mean of its divisors is an integer number (1111080).

Almost surely, 2^6655659 is an apocalyptic number.

6655659 is a deficient number, since it is larger than the sum of its proper divisors (2232981).

6655659 is a wasteful number, since it uses less digits than its factorization.

6655659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3609.

The product of its digits is 243000, while the sum is 42.

The square root of 6655659 is about 2579.8563913520. The cubic root of 6655659 is about 188.1035626025.

The spelling of 6655659 in words is "six million, six hundred fifty-five thousand, six hundred fifty-nine".