669940592 has 20 divisors (see below), whose sum is σ = 1299510576. Its totient is φ = 334583040.

The previous prime is 669940577. The next prime is 669940603. The reversal of 669940592 is 295049966.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 669940592.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9668 + ... + 37859.

Almost surely, 2^669940592 is an apocalyptic number.

It is an amenable number.

669940592 is a deficient number, since it is larger than the sum of its proper divisors (629569984).

669940592 is a wasteful number, since it uses less digits than its factorization.

669940592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48416 (or 48410 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 669940592 is about 25883.2106200139. The cubic root of 669940592 is about 875.0081488221.

The spelling of 669940592 in words is "six hundred sixty-nine million, nine hundred forty thousand, five hundred ninety-two".