68018394 has 32 divisors (see below), whose sum is σ = 144688896. Its totient is φ = 21242880.

The previous prime is 68018381. The next prime is 68018413. The reversal of 68018394 is 49381086.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23199 + ... + 25965.

It is an arithmetic number, because the mean of its divisors is an integer number (4521528).

Almost surely, 2^68018394 is an apocalyptic number.

68018394 is an abundant number, since it is smaller than the sum of its proper divisors (76670502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68018394 is a wasteful number, since it uses less digits than its factorization.

68018394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 68018394 is about 8247.3264758951. The cubic root of 68018394 is about 408.2023097973.

The spelling of 68018394 in words is "sixty-eight million, eighteen thousand, three hundred ninety-four".