800705 has 4 divisors (see below), whose sum is σ = 960852. Its totient is φ = 640560.

The previous prime is 800693. The next prime is 800707. The reversal of 800705 is 507008.

800705 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 350464 + 450241 = 592^2 + 671^2 .

It is not a de Polignac number, because 800705 - 2¹⁴ = 784321 is a prime.

It is a super-2 number, since 2×800705² = 1282256994050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800707) 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, 80066 + ... + 80075.

It is an arithmetic number, because the mean of its divisors is an integer number (240213).

2⁸⁰⁰⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

800705 is a deficient number, since it is larger than the sum of its proper divisors (160147).

800705 is a wasteful number, since it uses less digits than its factorization.

800705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160146.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 800705 is about 894.8212111925. The cubic root of 800705 is about 92.8590380002.

The spelling of 800705 in words is "eight hundred thousand, seven hundred five".