68519365 has 4 divisors (see below), whose sum is σ = 82223244. Its totient is φ = 54815488.

The previous prime is 68519357. The next prime is 68519383. The reversal of 68519365 is 56391586.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30991489 + 37527876 = 5567^2 + 6126^2 .

It is a cyclic number.

It is not a de Polignac number, because 68519365 - 2³ = 68519357 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 3 ways as a sum of consecutive naturals, for example, 6851932 + ... + 6851941.

It is an arithmetic number, because the mean of its divisors is an integer number (20555811).

Almost surely, 2^68519365 is an apocalyptic number.

It is an amenable number.

68519365 is a deficient number, since it is larger than the sum of its proper divisors (13703879).

68519365 is a wasteful number, since it uses less digits than its factorization.

68519365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13703878.

The product of its digits is 194400, while the sum is 43.

The square root of 68519365 is about 8277.6424783872. The cubic root of 68519365 is about 409.2020271515.

The spelling of 68519365 in words is "sixty-eight million, five hundred nineteen thousand, three hundred sixty-five".