669058648 has 8 divisors (see below), whose sum is σ = 1254484980. Its totient is φ = 334529320.

The previous prime is 669058639. The next prime is 669058667. The reversal of 669058648 is 846850966.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 669058595 and 669058604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41816158 + ... + 41816173.

Almost surely, 2^669058648 is an apocalyptic number.

It is an amenable number.

669058648 is a deficient number, since it is larger than the sum of its proper divisors (585426332).

669058648 is a wasteful number, since it uses less digits than its factorization.

669058648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83632337 (or 83632333 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The square root of 669058648 is about 25866.1680192486. The cubic root of 669058648 is about 874.6240117396.

The spelling of 669058648 in words is "six hundred sixty-nine million, fifty-eight thousand, six hundred forty-eight".