669569204 has 24 divisors (see below), whose sum is σ = 1181725608. Its totient is φ = 331943040.

The previous prime is 669569203. The next prime is 669569209. The reversal of 669569204 is 402965966.

669569204 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 4 ways, for example, as 157452304 + 512116900 = 12548^2 + 22630^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669569203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414302 + ... + 415914.

It is an arithmetic number, because the mean of its divisors is an integer number (49238567).

Almost surely, 2^669569204 is an apocalyptic number.

It is an amenable number.

669569204 is a deficient number, since it is larger than the sum of its proper divisors (512156404).

669569204 is a wasteful number, since it uses less digits than its factorization.

669569204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 669569204 is about 25876.0353222823. The cubic root of 669569204 is about 874.8464292117.

The spelling of 669569204 in words is "six hundred sixty-nine million, five hundred sixty-nine thousand, two hundred four".