68853281 has 12 divisors (see below), whose sum is σ = 84807108. Its totient is φ = 55544832.

The previous prime is 68853269. The next prime is 68853293. The reversal of 68853281 is 18235886.

It is an interprime number because it is at equal distance from previous prime (68853269) and next prime (68853293).

It can be written as a sum of positive squares in 2 ways, for example, as 47831056 + 21022225 = 6916^2 + 4585^2 .

It is not a de Polignac number, because 68853281 - 2⁶ = 68853217 is a prime.

It is a super-2 number, since 2×68853281² = 9481548608929922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68853581) 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 11 ways as a sum of consecutive naturals, for example, 40496 + ... + 42161.

It is an arithmetic number, because the mean of its divisors is an integer number (7067259).

Almost surely, 2^68853281 is an apocalyptic number.

It is an amenable number.

68853281 is a deficient number, since it is larger than the sum of its proper divisors (15953827).

68853281 is a wasteful number, since it uses less digits than its factorization.

68853281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82688 (or 82681 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 68853281 is about 8297.7877172172. The cubic root of 68853281 is about 409.8656728308.

The spelling of 68853281 in words is "sixty-eight million, eight hundred fifty-three thousand, two hundred eighty-one".