6646555353 has 8 divisors (see below), whose sum is σ = 8862559488. Its totient is φ = 4430794064.

The previous prime is 6646555343. The next prime is 6646555361. The reversal of 6646555353 is 3535556466.

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 6646555353 - 2¹³ = 6646547161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6646555343) 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, 17575 + ... + 116627.

It is an arithmetic number, because the mean of its divisors is an integer number (1107819936).

Almost surely, 2^6646555353 is an apocalyptic number.

It is an amenable number.

6646555353 is a deficient number, since it is larger than the sum of its proper divisors (2216004135).

6646555353 is a wasteful number, since it uses less digits than its factorization.

6646555353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121423.

The product of its digits is 4860000, while the sum is 48.

The square root of 6646555353 is about 81526.4089298676. The cubic root of 6646555353 is about 1880.1776044109.

The spelling of 6646555353 in words is "six billion, six hundred forty-six million, five hundred fifty-five thousand, three hundred fifty-three".