806808740 has 12 divisors (see below), whose sum is σ = 1694298396. Its totient is φ = 322723488.

The previous prime is 806808733. The next prime is 806808749. The reversal of 806808740 is 47808608.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 225420196 + 581388544 = 15014^2 + 24112^2 .

It is not an unprimeable number, because it can be changed into a prime (806808749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20170199 + ... + 20170238.

It is an arithmetic number, because the mean of its divisors is an integer number (141191533).

Almost surely, 2^806808740 is an apocalyptic number.

It is an amenable number.

806808740 is an abundant number, since it is smaller than the sum of its proper divisors (887489656).

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

806808740 is a wasteful number, since it uses less digits than its factorization.

806808740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40340446 (or 40340444 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 806808740 is about 28404.3788877701. The cubic root of 806808740 is about 930.9439446491.

The spelling of 806808740 in words is "eight hundred six million, eight hundred eight thousand, seven hundred forty".