68031285 has 16 divisors (see below), whose sum is σ = 124400256. Its totient is φ = 31099968.

The previous prime is 68031283. The next prime is 68031367. The reversal of 68031285 is 58213086.

It is a happy number.

It is not a de Polignac number, because 68031285 - 2¹ = 68031283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68031281) 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 in 15 ways as a sum of consecutive naturals, for example, 323854 + ... + 324063.

It is an arithmetic number, because the mean of its divisors is an integer number (7775016).

Almost surely, 2^68031285 is an apocalyptic number.

It is an amenable number.

68031285 is a deficient number, since it is larger than the sum of its proper divisors (56368971).

68031285 is a wasteful number, since it uses less digits than its factorization.

68031285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647932.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 68031285 is about 8248.1079648608. The cubic root of 68031285 is about 408.2280959770.

The spelling of 68031285 in words is "sixty-eight million, thirty-one thousand, two hundred eighty-five".