669331893 has 8 divisors (see below), whose sum is σ = 894380256. Its totient is φ = 445252400.

The previous prime is 669331891. The next prime is 669331921. The reversal of 669331893 is 398133966.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669331893 - 2¹ = 669331891 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669331891) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 240603 + ... + 243368.

It is an arithmetic number, because the mean of its divisors is an integer number (111797532).

Almost surely, 2^669331893 is an apocalyptic number.

It is an amenable number.

669331893 is a deficient number, since it is larger than the sum of its proper divisors (225048363).

669331893 is a wasteful number, since it uses less digits than its factorization.

669331893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484435.

The product of its digits is 629856, while the sum is 48.

The square root of 669331893 is about 25871.4493795767. The cubic root of 669331893 is about 874.7430616475.

The spelling of 669331893 in words is "six hundred sixty-nine million, three hundred thirty-one thousand, eight hundred ninety-three".