2066667218 has 48 divisors (see below), whose sum is σ = 3952053504. Its totient is φ = 801491040.

The previous prime is 2066667217. The next prime is 2066667257. The reversal of 2066667218 is 8127666602.

It is a super-2 number, since 2×2066667218² = 8542226779911719048, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2066667217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236096 + ... + 244692.

It is an arithmetic number, because the mean of its divisors is an integer number (82334448).

Almost surely, 2^2066667218 is an apocalyptic number.

2066667218 is a deficient number, since it is larger than the sum of its proper divisors (1885386286).

2066667218 is a wasteful number, since it uses less digits than its factorization.

2066667218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847 (or 8840 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2066667218 is about 45460.6117204773. The cubic root of 2066667218 is about 1273.7675581248.

The spelling of 2066667218 in words is "two billion, sixty-six million, six hundred sixty-seven thousand, two hundred eighteen".