669068572 has 12 divisors (see below), whose sum is σ = 1171933560. Its totient is φ = 334230416.

The previous prime is 669068513. The next prime is 669068591. The reversal of 669068572 is 275860966.

It is a happy number.

669068572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70978 + ... + 79849.

It is an arithmetic number, because the mean of its divisors is an integer number (97661130).

Almost surely, 2^669068572 is an apocalyptic number.

It is an amenable number.

669068572 is a deficient number, since it is larger than the sum of its proper divisors (502864988).

669068572 is a wasteful number, since it uses less digits than its factorization.

669068572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151940 (or 151938 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 669068572 is about 25866.3598521323. The cubic root of 669068572 is about 874.6283360868.

The spelling of 669068572 in words is "six hundred sixty-nine million, sixty-eight thousand, five hundred seventy-two".