844064068 has 6 divisors (see below), whose sum is σ = 1477112126. Its totient is φ = 422032032.

The previous prime is 844064003. The next prime is 844064087. The reversal of 844064068 is 860460448.

It can be written as a sum of positive squares in only one way, i.e., 718668864 + 125395204 = 26808^2 + 11198^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 844064068.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105508005 + ... + 105508012.

Almost surely, 2^844064068 is an apocalyptic number.

It is an amenable number.

844064068 is a deficient number, since it is larger than the sum of its proper divisors (633048058).

844064068 is a wasteful number, since it uses less digits than its factorization.

844064068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211016021 (or 211016019 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 844064068 is about 29052.7807274966. The cubic root of 844064068 is about 945.0580175833.

The spelling of 844064068 in words is "eight hundred forty-four million, sixty-four thousand, sixty-eight".