800545 has 8 divisors (see below), whose sum is σ = 993960. Its totient is φ = 618240.

The previous prime is 800539. The next prime is 800549. The reversal of 800545 is 545008.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 762129 = 196^2 + 873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 800545 - 2³ = 800537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (800549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616 + ... + 2905.

It is an arithmetic number, because the mean of its divisors is an integer number (124245).

2⁸⁰⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

800545 is a deficient number, since it is larger than the sum of its proper divisors (193415).

800545 is a wasteful number, since it uses less digits than its factorization.

800545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 800545 is about 894.7318033914. The cubic root of 800545 is about 92.8528524363.

The spelling of 800545 in words is "eight hundred thousand, five hundred forty-five".