845380866 has 16 divisors (see below), whose sum is σ = 1844467488. Its totient is φ = 256176000.

The previous prime is 845380849. The next prime is 845380871. The reversal of 845380866 is 668083548.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6404335 + ... + 6404466.

It is an arithmetic number, because the mean of its divisors is an integer number (115279218).

Almost surely, 2^845380866 is an apocalyptic number.

845380866 is an abundant number, since it is smaller than the sum of its proper divisors (999086622).

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

845380866 is a wasteful number, since it uses less digits than its factorization.

845380866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12808817.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 845380866 is about 29075.4340638278. The cubic root of 845380866 is about 945.5492140743.

The spelling of 845380866 in words is "eight hundred forty-five million, three hundred eighty thousand, eight hundred sixty-six".