68817938 has 16 divisors (see below), whose sum is σ = 124913664. Its totient is φ = 27758400.

The previous prime is 68817937. The next prime is 68817941. The reversal of 68817938 is 83971886.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68817937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144338 + ... + 144813.

It is an arithmetic number, because the mean of its divisors is an integer number (7807104).

Almost surely, 2^68817938 is an apocalyptic number.

68817938 is a deficient number, since it is larger than the sum of its proper divisors (56095726).

68817938 is a wasteful number, since it uses less digits than its factorization.

68817938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289177.

The product of its digits is 580608, while the sum is 50.

The square root of 68817938 is about 8295.6577798267. The cubic root of 68817938 is about 409.7955315993.

The spelling of 68817938 in words is "sixty-eight million, eight hundred seventeen thousand, nine hundred thirty-eight".