68143394 has 32 divisors (see below), whose sum is σ = 117960192. Its totient is φ = 29232000.

The previous prime is 68143391. The next prime is 68143403. The reversal of 68143394 is 49334186.

It is not an unprimeable number, because it can be changed into a prime (68143391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26744 + ... + 29180.

It is an arithmetic number, because the mean of its divisors is an integer number (3686256).

Almost surely, 2^68143394 is an apocalyptic number.

68143394 is a deficient number, since it is larger than the sum of its proper divisors (49816798).

68143394 is a wasteful number, since it uses less digits than its factorization.

68143394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522.

The product of its digits is 62208, while the sum is 38.

The square root of 68143394 is about 8254.9012107959. The cubic root of 68143394 is about 408.4522130983.

The spelling of 68143394 in words is "sixty-eight million, one hundred forty-three thousand, three hundred ninety-four".