669568273 has 8 divisors (see below), whose sum is σ = 773405280. Its totient is φ = 572892480.

The previous prime is 669568267. The next prime is 669568283. The reversal of 669568273 is 372865966.

669568273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669568273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669568273.

It is not an unprimeable number, because it can be changed into a prime (669568223) 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, 1790103 + ... + 1790476.

It is an arithmetic number, because the mean of its divisors is an integer number (96675660).

Almost surely, 2^669568273 is an apocalyptic number.

It is an amenable number.

669568273 is a deficient number, since it is larger than the sum of its proper divisors (103837007).

669568273 is a wasteful number, since it uses less digits than its factorization.

669568273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580607.

The product of its digits is 3265920, while the sum is 52.

The square root of 669568273 is about 25876.0173326577. The cubic root of 669568273 is about 874.8460237359.

The spelling of 669568273 in words is "six hundred sixty-nine million, five hundred sixty-eight thousand, two hundred seventy-three".