845605668 has 48 divisors (see below), whose sum is σ = 2023370496. Its totient is φ = 274767360.

The previous prime is 845605667. The next prime is 845605679. The reversal of 845605668 is 866506548.

It is a happy number.

845605668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (845605667) 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, 77605 + ... + 87827.

It is an arithmetic number, because the mean of its divisors is an integer number (42153552).

Almost surely, 2^845605668 is an apocalyptic number.

It is an amenable number.

845605668 is an abundant number, since it is smaller than the sum of its proper divisors (1177764828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845605668 is a wasteful number, since it uses less digits than its factorization.

845605668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10404 (or 10402 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The square root of 845605668 is about 29079.2996476875. The cubic root of 845605668 is about 945.6330195023.

The spelling of 845605668 in words is "eight hundred forty-five million, six hundred five thousand, six hundred sixty-eight".