845869866 has 32 divisors (see below), whose sum is σ = 1711216320. Its totient is φ = 278722944.

The previous prime is 845869847. The next prime is 845869889. The reversal of 845869866 is 668968548.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340806 + ... + 343278.

It is an arithmetic number, because the mean of its divisors is an integer number (53475510).

Almost surely, 2^845869866 is an apocalyptic number.

845869866 is an abundant number, since it is smaller than the sum of its proper divisors (865346454).

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

845869866 is a wasteful number, since it uses less digits than its factorization.

845869866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110.

The product of its digits is 19906560, while the sum is 60.

The square root of 845869866 is about 29083.8420089231. The cubic root of 845869866 is about 945.7314926430.

The spelling of 845869866 in words is "eight hundred forty-five million, eight hundred sixty-nine thousand, eight hundred sixty-six".