68287568 has 10 divisors (see below), whose sum is σ = 132307194. Its totient is φ = 34143776.

The previous prime is 68287567. The next prime is 68287579. The reversal of 68287568 is 86578286.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 258064 = 8248^2 + 508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68287561) 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 as a sum of consecutive naturals, namely, 2133971 + ... + 2134002.

Almost surely, 2^68287568 is an apocalyptic number.

It is an amenable number.

68287568 is a deficient number, since it is larger than the sum of its proper divisors (64019626).

68287568 is a wasteful number, since it uses less digits than its factorization.

68287568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267981 (or 4267975 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 50.

The square root of 68287568 is about 8263.6292269196. The cubic root of 68287568 is about 408.7400703352.

The spelling of 68287568 in words is "sixty-eight million, two hundred eighty-seven thousand, five hundred sixty-eight".