669584285 has 8 divisors (see below), whose sum is σ = 807581016. Its totient is φ = 532947520.

The previous prime is 669584269. The next prime is 669584297. The reversal of 669584285 is 582485966.

It can be written as a sum of positive squares in 4 ways, for example, as 249703204 + 419881081 = 15802^2 + 20491^2 .

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

It is not a de Polignac number, because 669584285 - 2⁴ = 669584269 is a prime.

It is a super-2 number, since 2×669584285² = 896686229437922450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338906 + ... + 340875.

It is an arithmetic number, because the mean of its divisors is an integer number (100947627).

Almost surely, 2^669584285 is an apocalyptic number.

It is an amenable number.

669584285 is a deficient number, since it is larger than the sum of its proper divisors (137996731).

669584285 is a wasteful number, since it uses less digits than its factorization.

669584285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679983.

The product of its digits is 4147200, while the sum is 53.

The square root of 669584285 is about 25876.3267292713. The cubic root of 669584285 is about 874.8529973453.

The spelling of 669584285 in words is "six hundred sixty-nine million, five hundred eighty-four thousand, two hundred eighty-five".