805706455 has 4 divisors (see below), whose sum is σ = 966847752. Its totient is φ = 644565160.

The previous prime is 805706441. The next prime is 805706497. The reversal of 805706455 is 554607508.

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

It is not a de Polignac number, because 805706455 - 2¹⁷ = 805575383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 80570641 + ... + 80570650.

It is an arithmetic number, because the mean of its divisors is an integer number (241711938).

Almost surely, 2^805706455 is an apocalyptic number.

805706455 is a deficient number, since it is larger than the sum of its proper divisors (161141297).

805706455 is a wasteful number, since it uses less digits than its factorization.

805706455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161141296.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 805706455 is about 28384.9688215436. The cubic root of 805706455 is about 930.5197907468.

It can be divided in two parts, 80570 and 6455, that added together give a square (87025 = 295²).

The spelling of 805706455 in words is "eight hundred five million, seven hundred six thousand, four hundred fifty-five".