285968105 has 8 divisors (see below), whose sum is σ = 343619592. Its totient is φ = 228469248.

The previous prime is 285968063. The next prime is 285968113. The reversal of 285968105 is 501869582.

It can be written as a sum of positive squares in 4 ways, for example, as 106729561 + 179238544 = 10331^2 + 13388^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285968105 - 2²⁰ = 284919529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33992 + ... + 41561.

It is an arithmetic number, because the mean of its divisors is an integer number (42952449).

Almost surely, 2^285968105 is an apocalyptic number.

It is an amenable number.

285968105 is a deficient number, since it is larger than the sum of its proper divisors (57651487).

285968105 is an equidigital number, since it uses as much as digits as its factorization.

285968105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76315.

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 285968105 is about 16910.5915035518. The cubic root of 285968105 is about 658.8287345566.

The spelling of 285968105 in words is "two hundred eighty-five million, nine hundred sixty-eight thousand, one hundred five".