993519668 has 12 divisors (see below), whose sum is σ = 1738905252. Its totient is φ = 496689600.

The previous prime is 993519649. The next prime is 993519673. The reversal of 993519668 is 866915399.

It can be written as a sum of positive squares in 2 ways, for example, as 870132004 + 123387664 = 29498^2 + 11108^2 .

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, 26618 + ... + 51918.

It is an arithmetic number, because the mean of its divisors is an integer number (144908771).

Almost surely, 2^993519668 is an apocalyptic number.

It is an amenable number.

993519668 is a deficient number, since it is larger than the sum of its proper divisors (745385584).

993519668 is a wasteful number, since it uses less digits than its factorization.

993519668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35122 (or 35120 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 56.

The square root of 993519668 is about 31520.1470174236. The cubic root of 993519668 is about 997.8352063836.

The spelling of 993519668 in words is "nine hundred ninety-three million, five hundred nineteen thousand, six hundred sixty-eight".