669900568 has 16 divisors (see below), whose sum is σ = 1256797080. Its totient is φ = 334754688.

The previous prime is 669900563. The next prime is 669900587. The reversal of 669900568 is 865009966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669900563) by changing a digit.

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, 9346 + ... + 37777.

Almost surely, 2^669900568 is an apocalyptic number.

It is an amenable number.

669900568 is a deficient number, since it is larger than the sum of its proper divisors (586896512).

669900568 is a wasteful number, since it uses less digits than its factorization.

669900568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48906 (or 48902 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 669900568 is about 25882.4374431776. The cubic root of 669900568 is about 874.9907233846.

The spelling of 669900568 in words is "six hundred sixty-nine million, nine hundred thousand, five hundred sixty-eight".