800609 has 4 divisors (see below), whose sum is σ = 802500. Its totient is φ = 798720.

The previous prime is 800599. The next prime is 800621. The reversal of 800609 is 906008.

800609 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 547600 + 253009 = 740^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 800609 - 2⁴ = 800593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (800659) 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, 17 + ... + 1265.

It is an arithmetic number, because the mean of its divisors is an integer number (200625).

2⁸⁰⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

800609 is a deficient number, since it is larger than the sum of its proper divisors (1891).

800609 is a wasteful number, since it uses less digits than its factorization.

800609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 800609 is about 894.7675675839. The cubic root of 800609 is about 92.8553267608.

The spelling of 800609 in words is "eight hundred thousand, six hundred nine".