669192908 has 12 divisors (see below), whose sum is σ = 1208864832. Its totient is φ = 323802960.

The previous prime is 669192907. The next prime is 669192911. The reversal of 669192908 is 809291966.

669192908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669192907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2698235 + ... + 2698482.

It is an arithmetic number, because the mean of its divisors is an integer number (100738736).

Almost surely, 2^669192908 is an apocalyptic number.

It is an amenable number.

669192908 is a deficient number, since it is larger than the sum of its proper divisors (539671924).

669192908 is a wasteful number, since it uses less digits than its factorization.

669192908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5396752 (or 5396750 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 669192908 is about 25868.7631710525. The cubic root of 669192908 is about 874.6825114273.

It can be divided in two parts, 6691 and 92908, that added together give a palindrome (99599).

The spelling of 669192908 in words is "six hundred sixty-nine million, one hundred ninety-two thousand, nine hundred eight".