68816288 has 12 divisors (see below), whose sum is σ = 135482130. Its totient is φ = 34408128.

The previous prime is 68816281. The next prime is 68816329. The reversal of 68816288 is 88261886.

It can be written as a sum of positive squares in only one way, i.e., 52591504 + 16224784 = 7252^2 + 4028^2 .

It is not an unprimeable number, because it can be changed into a prime (68816281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075223 + ... + 1075286.

Almost surely, 2^68816288 is an apocalyptic number.

It is an amenable number.

68816288 is a deficient number, since it is larger than the sum of its proper divisors (66665842).

68816288 is a wasteful number, since it uses less digits than its factorization.

68816288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150519 (or 2150511 counting only the distinct ones).

The product of its digits is 294912, while the sum is 47.

The square root of 68816288 is about 8295.5583296123. The cubic root of 68816288 is about 409.7922564453.

The spelling of 68816288 in words is "sixty-eight million, eight hundred sixteen thousand, two hundred eighty-eight".