806322861 has 6 divisors (see below), whose sum is σ = 1164688590. Its totient is φ = 537548568.

The previous prime is 806322857. The next prime is 806322883. The reversal of 806322861 is 168223608.

It can be written as a sum of positive squares in only one way, i.e., 450245961 + 356076900 = 21219^2 + 18870^2 .

It is not a de Polignac number, because 806322861 - 2² = 806322857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806322821) 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 5 ways as a sum of consecutive naturals, for example, 44795706 + ... + 44795723.

It is an arithmetic number, because the mean of its divisors is an integer number (194114765).

Almost surely, 2^806322861 is an apocalyptic number.

It is an amenable number.

806322861 is a deficient number, since it is larger than the sum of its proper divisors (358365729).

806322861 is a wasteful number, since it uses less digits than its factorization.

806322861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89591435 (or 89591432 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 806322861 is about 28395.8247106859. The cubic root of 806322861 is about 930.7570284192.

The spelling of 806322861 in words is "eight hundred six million, three hundred twenty-two thousand, eight hundred sixty-one".