669058688 has 16 divisors (see below), whose sum is σ = 1332890610. Its totient is φ = 334529280.

The previous prime is 669058667. The next prime is 669058693. The reversal of 669058688 is 886850966.

It can be written as a sum of positive squares in only one way, i.e., 344770624 + 324288064 = 18568^2 + 18008^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2613383 + ... + 2613638.

Almost surely, 2^669058688 is an apocalyptic number.

It is an amenable number.

669058688 is a deficient number, since it is larger than the sum of its proper divisors (663831922).

669058688 is an equidigital number, since it uses as much as digits as its factorization.

669058688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5227035 (or 5227023 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The square root of 669058688 is about 25866.1687924594. The cubic root of 669058688 is about 874.6240291695.

The spelling of 669058688 in words is "six hundred sixty-nine million, fifty-eight thousand, six hundred eighty-eight".