68945938 has 16 divisors (see below), whose sum is σ = 104558400. Its totient is φ = 34095600.

The previous prime is 68945909. The next prime is 68945939. The reversal of 68945938 is 83954986.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68945939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83568 + ... + 84388.

It is an arithmetic number, because the mean of its divisors is an integer number (6534900).

Almost surely, 2^68945938 is an apocalyptic number.

68945938 is a deficient number, since it is larger than the sum of its proper divisors (35612462).

68945938 is a wasteful number, since it uses less digits than its factorization.

68945938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233.

The product of its digits is 1866240, while the sum is 52.

The square root of 68945938 is about 8303.3690752610. The cubic root of 68945938 is about 410.0494447606.

The spelling of 68945938 in words is "sixty-eight million, nine hundred forty-five thousand, nine hundred thirty-eight".