669000218 has 16 divisors (see below), whose sum is σ = 1108728000. Its totient is φ = 301135296.

The previous prime is 669000193. The next prime is 669000221. The reversal of 669000218 is 812000966.

It is a super-2 number, since 2×669000218² = 895122583368095048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426968 + ... + 428531.

It is an arithmetic number, because the mean of its divisors is an integer number (69295500).

Almost surely, 2^669000218 is an apocalyptic number.

669000218 is a deficient number, since it is larger than the sum of its proper divisors (439727782).

669000218 is a wasteful number, since it uses less digits than its factorization.

669000218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855541.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 669000218 is about 25865.0385269383. The cubic root of 669000218 is about 874.5985502104.

The spelling of 669000218 in words is "six hundred sixty-nine million, two hundred eighteen", and thus it is an aban number.