68170205 has 8 divisors (see below), whose sum is σ = 81874104. Its totient is φ = 54489600.

The previous prime is 68170199. The next prime is 68170231. The reversal of 68170205 is 50207186.

It can be written as a sum of positive squares in 4 ways, for example, as 22174681 + 45995524 = 4709^2 + 6782^2 .

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

It is not a de Polignac number, because 68170205 - 2¹⁰ = 68169181 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 7 ways as a sum of consecutive naturals, for example, 1445 + ... + 11765.

It is an arithmetic number, because the mean of its divisors is an integer number (10234263).

Almost surely, 2^68170205 is an apocalyptic number.

It is an amenable number.

68170205 is a deficient number, since it is larger than the sum of its proper divisors (13703899).

68170205 is a wasteful number, since it uses less digits than its factorization.

68170205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11647.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 68170205 is about 8256.5249954203. The cubic root of 68170205 is about 408.5057745454.

The spelling of 68170205 in words is "sixty-eight million, one hundred seventy thousand, two hundred five".