68306885 has 16 divisors (see below), whose sum is σ = 83713392. Its totient is φ = 53491200.

The previous prime is 68306879. The next prime is 68306891. The reversal of 68306885 is 58860386.

It is an interprime number because it is at equal distance from previous prime (68306879) and next prime (68306891).

It can be written as a sum of positive squares in 8 ways, for example, as 5612161 + 62694724 = 2369^2 + 7918^2 .

It is not a de Polignac number, because 68306885 - 2¹² = 68302789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 85307 + ... + 86103.

It is an arithmetic number, because the mean of its divisors is an integer number (5232087).

Almost surely, 2^68306885 is an apocalyptic number.

It is an amenable number.

68306885 is a deficient number, since it is larger than the sum of its proper divisors (15406507).

68306885 is a wasteful number, since it uses less digits than its factorization.

68306885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 68306885 is about 8264.7979406638. The cubic root of 68306885 is about 408.7786077918.

The spelling of 68306885 in words is "sixty-eight million, three hundred six thousand, eight hundred eighty-five".