669506585 has 16 divisors (see below), whose sum is σ = 877476672. Its totient is φ = 486340800.

The previous prime is 669506569. The next prime is 669506647. The reversal of 669506585 is 585605966.

It is not a de Polignac number, because 669506585 - 2⁴ = 669506569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43175 + ... + 56595.

It is an arithmetic number, because the mean of its divisors is an integer number (54842292).

Almost surely, 2^669506585 is an apocalyptic number.

It is an amenable number.

669506585 is a deficient number, since it is larger than the sum of its proper divisors (207970087).

669506585 is a wasteful number, since it uses less digits than its factorization.

669506585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344.

The product of its (nonzero) digits is 1944000, while the sum is 50.

The square root of 669506585 is about 25874.8253134200. The cubic root of 669506585 is about 874.8191560954.

The spelling of 669506585 in words is "six hundred sixty-nine million, five hundred six thousand, five hundred eighty-five".