68813872 has 10 divisors (see below), whose sum is σ = 133326908. Its totient is φ = 34406928.

The previous prime is 68813869. The next prime is 68813879. The reversal of 68813872 is 27831886.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68813879) 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 as a sum of consecutive naturals, namely, 2150418 + ... + 2150449.

Almost surely, 2^68813872 is an apocalyptic number.

It is an amenable number.

68813872 is a deficient number, since it is larger than the sum of its proper divisors (64513036).

68813872 is a wasteful number, since it uses less digits than its factorization.

68813872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300875 (or 4300869 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 68813872 is about 8295.4127082382. The cubic root of 68813872 is about 409.7874607315.

The spelling of 68813872 in words is "sixty-eight million, eight hundred thirteen thousand, eight hundred seventy-two".