68052305 has 4 divisors (see below), whose sum is σ = 81662772. Its totient is φ = 54441840.

The previous prime is 68052301. The next prime is 68052317. The reversal of 68052305 is 50325086.

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 23309584 + 44742721 = 4828^2 + 6689^2 .

It is not a de Polignac number, because 68052305 - 2² = 68052301 is a prime.

It is a super-2 number, since 2×68052305² = 9262232431626050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68052301) by changing a digit.

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, 6805226 + ... + 6805235.

It is an arithmetic number, because the mean of its divisors is an integer number (20415693).

Almost surely, 2^68052305 is an apocalyptic number.

It is an amenable number.

68052305 is a deficient number, since it is larger than the sum of its proper divisors (13610467).

68052305 is a wasteful number, since it uses less digits than its factorization.

68052305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13610466.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 68052305 is about 8249.3820980726. The cubic root of 68052305 is about 408.2701358069.

The spelling of 68052305 in words is "sixty-eight million, fifty-two thousand, three hundred five".