1669217668 has 12 divisors (see below), whose sum is σ = 2962274112. Its totient is φ = 822853640.

The previous prime is 1669217633. The next prime is 1669217677. The reversal of 1669217668 is 8667129661.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2938480 + ... + 2939047.

It is an arithmetic number, because the mean of its divisors is an integer number (246856176).

Almost surely, 2^1669217668 is an apocalyptic number.

It is an amenable number.

1669217668 is a deficient number, since it is larger than the sum of its proper divisors (1293056444).

1669217668 is a wasteful number, since it uses less digits than its factorization.

1669217668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877602 (or 5877600 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 1669217668 is about 40856.0603582871. The cubic root of 1669217668 is about 1186.2357024381.

The spelling of 1669217668 in words is "one billion, six hundred sixty-nine million, two hundred seventeen thousand, six hundred sixty-eight".