68565845 has 8 divisors (see below), whose sum is σ = 87119064. Its totient is φ = 51625984.

The previous prime is 68565841. The next prime is 68565853. The reversal of 68565845 is 54856586.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6754801 + 61811044 = 2599^2 + 7862^2 .

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 68565845 - 2² = 68565841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68565845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68565841) by changing a digit.

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, 403244 + ... + 403413.

It is an arithmetic number, because the mean of its divisors is an integer number (10889883).

Almost surely, 2^68565845 is an apocalyptic number.

It is an amenable number.

68565845 is a deficient number, since it is larger than the sum of its proper divisors (18553219).

68565845 is a wasteful number, since it uses less digits than its factorization.

68565845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806679.

The product of its digits is 1152000, while the sum is 47.

The square root of 68565845 is about 8280.4495650901. The cubic root of 68565845 is about 409.2945334144.

The spelling of 68565845 in words is "sixty-eight million, five hundred sixty-five thousand, eight hundred forty-five".