806473565 has 4 divisors (see below), whose sum is σ = 967768284. Its totient is φ = 645178848.

The previous prime is 806473543. The next prime is 806473579. The reversal of 806473565 is 565374608.

806473565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 399160441 + 407313124 = 19979^2 + 20182^2 .

It is a cyclic number.

It is not a de Polignac number, because 806473565 - 2¹⁸ = 806211421 is a prime.

It is a super-2 number, since 2×806473565² = 1300799222087618450, which contains 22 as substring.

It is a Duffinian number.

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, 80647352 + ... + 80647361.

It is an arithmetic number, because the mean of its divisors is an integer number (241942071).

Almost surely, 2^806473565 is an apocalyptic number.

It is an amenable number.

806473565 is a deficient number, since it is larger than the sum of its proper divisors (161294719).

806473565 is a wasteful number, since it uses less digits than its factorization.

806473565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161294718.

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 806473565 is about 28398.4782162707. The cubic root of 806473565 is about 930.8150118384.

The spelling of 806473565 in words is "eight hundred six million, four hundred seventy-three thousand, five hundred sixty-five".