669692704 has 12 divisors (see below), whose sum is σ = 1318457574. Its totient is φ = 334846336.

The previous prime is 669692669. The next prime is 669692719. The reversal of 669692704 is 407296966.

669692704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 361760400 + 307932304 = 19020^2 + 17548^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10463917 + ... + 10463980.

Almost surely, 2^669692704 is an apocalyptic number.

It is an amenable number.

669692704 is a deficient number, since it is larger than the sum of its proper divisors (648764870).

669692704 is a wasteful number, since it uses less digits than its factorization.

669692704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20927907 (or 20927899 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 669692704 is about 25878.4215901975. The cubic root of 669692704 is about 874.9002134914.

The spelling of 669692704 in words is "six hundred sixty-nine million, six hundred ninety-two thousand, seven hundred four".