800555065 has 8 divisors (see below), whose sum is σ = 970570440. Its totient is φ = 633841152.

The previous prime is 800555057. The next prime is 800555099. The reversal of 800555065 is 560555008.

It can be written as a sum of positive squares in 4 ways, for example, as 31990336 + 768564729 = 5656^2 + 27723^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 800555065 - 2³ = 800555057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 800555065.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824830 + ... + 825799.

It is an arithmetic number, because the mean of its divisors is an integer number (121321305).

Almost surely, 2^800555065 is an apocalyptic number.

It is an amenable number.

800555065 is a deficient number, since it is larger than the sum of its proper divisors (170015375).

800555065 is a wasteful number, since it uses less digits than its factorization.

800555065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650731.

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 800555065 is about 28294.0818016772. The cubic root of 800555065 is about 928.5324157123.

The spelling of 800555065 in words is "eight hundred million, five hundred fifty-five thousand, sixty-five".