669506584 has 16 divisors (see below), whose sum is σ = 1259961120. Its totient is φ = 333516960.

The previous prime is 669506569. The next prime is 669506647. The reversal of 669506584 is 485605966.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 152239 + ... + 156574.

It is an arithmetic number, because the mean of its divisors is an integer number (78747570).

Almost surely, 2^669506584 is an apocalyptic number.

It is an amenable number.

669506584 is a deficient number, since it is larger than the sum of its proper divisors (590454536).

669506584 is a wasteful number, since it uses less digits than its factorization.

669506584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309090 (or 309086 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The square root of 669506584 is about 25874.8252940962. The cubic root of 669506584 is about 874.8191556598.

The spelling of 669506584 in words is "six hundred sixty-nine million, five hundred six thousand, five hundred eighty-four".