6615665255 has 8 divisors (see below), whose sum is σ = 7940205792. Its totient is φ = 5291593888.

The previous prime is 6615665239. The next prime is 6615665263. The reversal of 6615665255 is 5525665166.

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 6615665255 - 2⁴ = 6615665239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85484 + ... + 143313.

It is an arithmetic number, because the mean of its divisors is an integer number (992525724).

Almost surely, 2^6615665255 is an apocalyptic number.

6615665255 is a deficient number, since it is larger than the sum of its proper divisors (1324540537).

6615665255 is a wasteful number, since it uses less digits than its factorization.

6615665255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234585.

The product of its digits is 1620000, while the sum is 47.

The square root of 6615665255 is about 81336.7398842614. The cubic root of 6615665255 is about 1877.2603500374.

The spelling of 6615665255 in words is "six billion, six hundred fifteen million, six hundred sixty-five thousand, two hundred fifty-five".