669545122 has 8 divisors (see below), whose sum is σ = 1005095916. Its totient is φ = 334513152.

The previous prime is 669545113. The next prime is 669545179. The reversal of 669545122 is 221545966.

669545122 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 362559681 + 306985441 = 19041^2 + 17521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126463 + ... + 131650.

Almost surely, 2^669545122 is an apocalyptic number.

669545122 is a deficient number, since it is larger than the sum of its proper divisors (335550794).

669545122 is a wasteful number, since it uses less digits than its factorization.

669545122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259412.

The product of its digits is 129600, while the sum is 40.

The square root of 669545122 is about 25875.5699840603. The cubic root of 669545122 is about 874.8359407244.

The spelling of 669545122 in words is "six hundred sixty-nine million, five hundred forty-five thousand, one hundred twenty-two".