808145 has 8 divisors (see below), whose sum is σ = 1044456. Its totient is φ = 596736.

The previous prime is 808111. The next prime is 808147. The reversal of 808145 is 541808.

808145 = T₄₀ + T₄₁ + ... + T₁₆₉.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 802816 = 73^2 + 896^2 .

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 808145 - 2⁶ = 808081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 808145.

It is not an unprimeable number, because it can be changed into a prime (808147) 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, 6152 + ... + 6281.

It is an arithmetic number, because the mean of its divisors is an integer number (130557).

2⁸⁰⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

808145 is a deficient number, since it is larger than the sum of its proper divisors (236311).

808145 is a wasteful number, since it uses less digits than its factorization.

808145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12451.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 808145 is about 898.9688537430. The cubic root of 808145 is about 93.1457613276.

The spelling of 808145 in words is "eight hundred eight thousand, one hundred forty-five".