806561888 has 24 divisors (see below), whose sum is σ = 1732275720. Its totient is φ = 366618880.

The previous prime is 806561869. The next prime is 806561911. The reversal of 806561888 is 888165608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145333 + ... + 1146036.

It is an arithmetic number, because the mean of its divisors is an integer number (72178155).

Almost surely, 2^806561888 is an apocalyptic number.

806561888 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

806561888 is an abundant number, since it is smaller than the sum of its proper divisors (925713832).

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

806561888 is a wasteful number, since it uses less digits than its factorization.

806561888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291390 (or 2291382 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 50.

The square root of 806561888 is about 28400.0332394172. The cubic root of 806561888 is about 930.8489907877.

The spelling of 806561888 in words is "eight hundred six million, five hundred sixty-one thousand, eight hundred eighty-eight".