669014608 has 20 divisors (see below), whose sum is σ = 1296884628. Its totient is φ = 334334720.

The previous prime is 669014603. The next prime is 669014653. The reversal of 669014608 is 806410966.

It can be written as a sum of positive squares in 2 ways, for example, as 378380304 + 290634304 = 19452^2 + 17048^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669014603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24738 + ... + 44158.

Almost surely, 2^669014608 is an apocalyptic number.

It is an amenable number.

669014608 is a deficient number, since it is larger than the sum of its proper divisors (627870020).

669014608 is a wasteful number, since it uses less digits than its factorization.

669014608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21582 (or 21576 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 669014608 is about 25865.3167001682. The cubic root of 669014608 is about 874.6048209523.

The spelling of 669014608 in words is "six hundred sixty-nine million, fourteen thousand, six hundred eight".