6606818818 has 4 divisors (see below), whose sum is σ = 9910228230. Its totient is φ = 3303409408.

The previous prime is 6606818789. The next prime is 6606818819. The reversal of 6606818818 is 8188186066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6542706769 + 64112049 = 80887^2 + 8007^2 .

It is not an unprimeable number, because it can be changed into a prime (6606818819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1651704703 + ... + 1651704706.

Almost surely, 2^6606818818 is an apocalyptic number.

6606818818 is a deficient number, since it is larger than the sum of its proper divisors (3303409412).

6606818818 is a wasteful number, since it uses less digits than its factorization.

6606818818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303409411.

The product of its (nonzero) digits is 884736, while the sum is 52.

The square root of 6606818818 is about 81282.3401360960. The cubic root of 6606818818 is about 1876.4232221710.

The spelling of 6606818818 in words is "six billion, six hundred six million, eight hundred eighteen thousand, eight hundred eighteen".