669148268 has 24 divisors (see below), whose sum is σ = 1218330624. Its totient is φ = 321224400.

The previous prime is 669148261. The next prime is 669148279. The reversal of 669148268 is 862841966.

It is a happy number.

669148268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (669148261) 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, 5498 + ... + 36993.

It is an arithmetic number, because the mean of its divisors is an integer number (50763776).

Almost surely, 2^669148268 is an apocalyptic number.

It is an amenable number.

669148268 is a deficient number, since it is larger than the sum of its proper divisors (549182356).

669148268 is a wasteful number, since it uses less digits than its factorization.

669148268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42653 (or 42651 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The square root of 669148268 is about 25867.9003399967. The cubic root of 669148268 is about 874.6630617813.

The spelling of 669148268 in words is "six hundred sixty-nine million, one hundred forty-eight thousand, two hundred sixty-eight".