993057668 has 12 divisors (see below), whose sum is σ = 1738170252. Its totient is φ = 496437600.

The previous prime is 993057649. The next prime is 993057671. The reversal of 993057668 is 866750399.

993057668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 409738564 + 583319104 = 20242^2 + 24152^2 .

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, 5618 + ... + 44918.

It is an arithmetic number, because the mean of its divisors is an integer number (144847521).

Almost surely, 2^993057668 is an apocalyptic number.

It is an amenable number.

993057668 is a deficient number, since it is larger than the sum of its proper divisors (745112584).

993057668 is a wasteful number, since it uses less digits than its factorization.

993057668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45622 (or 45620 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 53.

The square root of 993057668 is about 31512.8175192254. The cubic root of 993057668 is about 997.6805134752.

The spelling of 993057668 in words is "nine hundred ninety-three million, fifty-seven thousand, six hundred sixty-eight".