6611655089 has 4 divisors (see below), whose sum is σ = 7120243956. Its totient is φ = 6103066224.

The previous prime is 6611655047. The next prime is 6611655091. The reversal of 6611655089 is 9805561166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9805561166 = 2 ⋅4902780583.

It can be written as a sum of positive squares in 2 ways, for example, as 931470400 + 5680184689 = 30520^2 + 75367^2 .

It is a cyclic number.

It is not a de Polignac number, because 6611655089 - 2²⁴ = 6594877873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6611655889) 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, 254294414 + ... + 254294439.

It is an arithmetic number, because the mean of its divisors is an integer number (1780060989).

Almost surely, 2^6611655089 is an apocalyptic number.

It is an amenable number.

6611655089 is a deficient number, since it is larger than the sum of its proper divisors (508588867).

6611655089 is a wasteful number, since it uses less digits than its factorization.

6611655089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508588866.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 6611655089 is about 81312.0845200761. The cubic root of 6611655089 is about 1876.8809653024.

The spelling of 6611655089 in words is "six billion, six hundred eleven million, six hundred fifty-five thousand, eighty-nine".