68304245 has 8 divisors (see below), whose sum is σ = 82015416. Its totient is φ = 54609856.

The previous prime is 68304217. The next prime is 68304277. The reversal of 68304245 is 54240386.

It can be written as a sum of positive squares in 4 ways, for example, as 6932689 + 61371556 = 2633^2 + 7834^2 .

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 68304245 - 2¹² = 68300149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 7979 + ... + 14151.

It is an arithmetic number, because the mean of its divisors is an integer number (10251927).

Almost surely, 2^68304245 is an apocalyptic number.

It is an amenable number.

68304245 is a deficient number, since it is larger than the sum of its proper divisors (13711171).

68304245 is a wasteful number, since it uses less digits than its factorization.

68304245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 68304245 is about 8264.6382255971. The cubic root of 68304245 is about 408.7733414148.

The spelling of 68304245 in words is "sixty-eight million, three hundred four thousand, two hundred forty-five".