806715220 has 12 divisors (see below), whose sum is σ = 1694102004. Its totient is φ = 322686080.

The previous prime is 806715209. The next prime is 806715223. The reversal of 806715220 is 22517608.

806715220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 284866884 + 521848336 = 16878^2 + 22844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806715223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20167861 + ... + 20167900.

It is an arithmetic number, because the mean of its divisors is an integer number (141175167).

Almost surely, 2^806715220 is an apocalyptic number.

It is an amenable number.

806715220 is an abundant number, since it is smaller than the sum of its proper divisors (887386784).

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

806715220 is a wasteful number, since it uses less digits than its factorization.

806715220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40335770 (or 40335768 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 806715220 is about 28402.7326150144. The cubic root of 806715220 is about 930.9079736118.

The spelling of 806715220 in words is "eight hundred six million, seven hundred fifteen thousand, two hundred twenty".