68447845 has 16 divisors (see below), whose sum is σ = 85082112. Its totient is φ = 52807680.

The previous prime is 68447837. The next prime is 68447849. The reversal of 68447845 is 54874486.

It is not a de Polignac number, because 68447845 - 2³ = 68447837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68447795 and 68447804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68447849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58789 + ... + 59941.

It is an arithmetic number, because the mean of its divisors is an integer number (5317632).

Almost surely, 2^68447845 is an apocalyptic number.

It is an amenable number.

68447845 is a deficient number, since it is larger than the sum of its proper divisors (16634267).

68447845 is a wasteful number, since it uses less digits than its factorization.

68447845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572.

The product of its digits is 860160, while the sum is 46.

The square root of 68447845 is about 8273.3212798730. The cubic root of 68447845 is about 409.0596035827.

The spelling of 68447845 in words is "sixty-eight million, four hundred forty-seven thousand, eight hundred forty-five".