669185228 has 6 divisors (see below), whose sum is σ = 1171074156. Its totient is φ = 334592612.

The previous prime is 669185227. The next prime is 669185267. The reversal of 669185228 is 822581966.

It is not an unprimeable number, because it can be changed into a prime (669185227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83648150 + ... + 83648157.

It is an arithmetic number, because the mean of its divisors is an integer number (195179026).

Almost surely, 2^669185228 is an apocalyptic number.

It is an amenable number.

669185228 is a deficient number, since it is larger than the sum of its proper divisors (501888928).

669185228 is a wasteful number, since it uses less digits than its factorization.

669185228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167296311 (or 167296309 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 669185228 is about 25868.6147290496. The cubic root of 669185228 is about 874.6791653133.

It can be divided in two parts, 6691 and 85228, that added together give a palindrome (91919).

The spelling of 669185228 in words is "six hundred sixty-nine million, one hundred eighty-five thousand, two hundred twenty-eight".