669612352 has 28 divisors (see below), whose sum is σ = 1330246260. Its totient is φ = 334432256.

The previous prime is 669612343. The next prime is 669612353. The reversal of 669612352 is 253216966.

669612352 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 2 ways, for example, as 636250176 + 33362176 = 25224^2 + 5776^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669612353) 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, 57174 + ... + 67882.

It is an arithmetic number, because the mean of its divisors is an integer number (47508795).

Almost surely, 2^669612352 is an apocalyptic number.

It is an amenable number.

669612352 is a deficient number, since it is larger than the sum of its proper divisors (660633908).

669612352 is a wasteful number, since it uses less digits than its factorization.

669612352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11698 (or 11688 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 669612352 is about 25876.8690532684. The cubic root of 669612352 is about 874.8652209277.

The spelling of 669612352 in words is "six hundred sixty-nine million, six hundred twelve thousand, three hundred fifty-two".