669570268 has 12 divisors (see below), whose sum is σ = 1177820560. Its totient is φ = 333050112.

The previous prime is 669570199. The next prime is 669570283. The reversal of 669570268 is 862075966.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432888 + ... + 434431.

Almost surely, 2^669570268 is an apocalyptic number.

It is an amenable number.

669570268 is a deficient number, since it is larger than the sum of its proper divisors (508250292).

669570268 is a wasteful number, since it uses less digits than its factorization.

669570268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867516 (or 867514 counting only the distinct ones).

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

The square root of 669570268 is about 25876.0558818379. The cubic root of 669570268 is about 874.8468926122.

The spelling of 669570268 in words is "six hundred sixty-nine million, five hundred seventy thousand, two hundred sixty-eight".