68845285 has 8 divisors (see below), whose sum is σ = 83141496. Its totient is φ = 54724800.

The previous prime is 68845277. The next prime is 68845307. The reversal of 68845285 is 58254886.

It can be written as a sum of positive squares in 4 ways, for example, as 16990884 + 51854401 = 4122^2 + 7201^2 .

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

It is not a de Polignac number, because 68845285 - 2³ = 68845277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43066 + ... + 44635.

It is an arithmetic number, because the mean of its divisors is an integer number (10392687).

Almost surely, 2^68845285 is an apocalyptic number.

It is an amenable number.

68845285 is a deficient number, since it is larger than the sum of its proper divisors (14296211).

68845285 is a wasteful number, since it uses less digits than its factorization.

68845285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87863.

The product of its digits is 614400, while the sum is 46.

The square root of 68845285 is about 8297.3058880579. The cubic root of 68845285 is about 409.8498061805.

The spelling of 68845285 in words is "sixty-eight million, eight hundred forty-five thousand, two hundred eighty-five".