68133868 has 12 divisors (see below), whose sum is σ = 130073832. Its totient is φ = 30969920.

The previous prime is 68133827. The next prime is 68133869. The reversal of 68133868 is 86833186.

It is not an unprimeable number, because it can be changed into a prime (68133869) 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, 774205 + ... + 774292.

It is an arithmetic number, because the mean of its divisors is an integer number (10839486).

Almost surely, 2^68133868 is an apocalyptic number.

It is an amenable number.

68133868 is a deficient number, since it is larger than the sum of its proper divisors (61939964).

68133868 is a wasteful number, since it uses less digits than its factorization.

68133868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548512 (or 1548510 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 68133868 is about 8254.3242000784. The cubic root of 68133868 is about 408.4331792303.

The spelling of 68133868 in words is "sixty-eight million, one hundred thirty-three thousand, eight hundred sixty-eight".