68284393 has 12 divisors (see below), whose sum is σ = 74301948. Its totient is φ = 62499840.

The previous prime is 68284379. The next prime is 68284421. The reversal of 68284393 is 39348286.

It can be written as a sum of positive squares in 6 ways, for example, as 37847104 + 30437289 = 6152^2 + 5517^2 .

It is a de Polignac number, because none of the positive numbers 2^k-68284393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68284303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218005 + ... + 218317.

It is an arithmetic number, because the mean of its divisors is an integer number (6191829).

Almost surely, 2^68284393 is an apocalyptic number.

It is an amenable number.

68284393 is a deficient number, since it is larger than the sum of its proper divisors (6017555).

68284393 is an equidigital number, since it uses as much as digits as its factorization.

68284393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 371 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 68284393 is about 8263.4371178100. The cubic root of 68284393 is about 408.7337355080.

The spelling of 68284393 in words is "sixty-eight million, two hundred eighty-four thousand, three hundred ninety-three".