805744255 has 4 divisors (see below), whose sum is σ = 966893112. Its totient is φ = 644595400.

The previous prime is 805744249. The next prime is 805744271. The reversal of 805744255 is 552447508.

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

It is not a de Polignac number, because 805744255 - 2¹⁷ = 805613183 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 80574421 + ... + 80574430.

It is an arithmetic number, because the mean of its divisors is an integer number (241723278).

Almost surely, 2^805744255 is an apocalyptic number.

805744255 is a deficient number, since it is larger than the sum of its proper divisors (161148857).

805744255 is a wasteful number, since it uses less digits than its factorization.

805744255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161148856.

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 805744255 is about 28385.6346591018. The cubic root of 805744255 is about 930.5343424063.

The spelling of 805744255 in words is "eight hundred five million, seven hundred forty-four thousand, two hundred fifty-five".