193668668 has 12 divisors (see below), whose sum is σ = 340376400. Its totient is φ = 96418272.

The previous prime is 193668667. The next prime is 193668677. The reversal of 193668668 is 866866391.

193668668 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 not an unprimeable number, because it can be changed into a prime (193668661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102968 + ... + 104831.

It is an arithmetic number, because the mean of its divisors is an integer number (28364700).

Almost surely, 2^193668668 is an apocalyptic number.

It is an amenable number.

193668668 is a deficient number, since it is larger than the sum of its proper divisors (146707732).

193668668 is a wasteful number, since it uses less digits than its factorization.

193668668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208036 (or 208034 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 193668668 is about 13916.4890687271. The cubic root of 193668668 is about 578.5662844899.

The spelling of 193668668 in words is "one hundred ninety-three million, six hundred sixty-eight thousand, six hundred sixty-eight".