6654618385 has 8 divisors (see below), whose sum is σ = 7986087720. Its totient is φ = 5323330944.

The previous prime is 6654618367. The next prime is 6654618389. The reversal of 6654618385 is 5838164566.

It can be written as a sum of positive squares in 4 ways, for example, as 1402427601 + 5252190784 = 37449^2 + 72472^2 .

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 6654618385 - 2⁵ = 6654618353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6654618389) 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, 55339 + ... + 127951.

It is an arithmetic number, because the mean of its divisors is an integer number (998260965).

Almost surely, 2^6654618385 is an apocalyptic number.

It is an amenable number.

6654618385 is a deficient number, since it is larger than the sum of its proper divisors (1331469335).

6654618385 is a wasteful number, since it uses less digits than its factorization.

6654618385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90947.

The product of its digits is 4147200, while the sum is 52.

The square root of 6654618385 is about 81575.8443719708. The cubic root of 6654618385 is about 1880.9375873529.

The spelling of 6654618385 in words is "six billion, six hundred fifty-four million, six hundred eighteen thousand, three hundred eighty-five".